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Questions tagged [optimization]

For use on questions asking how to optimize specific things. i.e. game logic, rigid body simulations, viewport performance.

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4 votes
2 answers
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Remove faces in contact with each other

After adding several cubes on top of a plane, the bottom part of those cubes is in contact with the plane. The idea is remove redundant faces that are not seen by the camera to optimized the scene. In ...
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0 votes
0 answers
21 views

Optimizing Code and clean up temporary meshes

Looking to improve some code that I think could be problematic and may simply not be as efficient as it could be. I have a script that converts an SVG into separate meshes for individual shapes. I do ...
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-1 votes
1 answer
68 views

Shortening time for repeated renders on cycles for animations

1 Frame rendered in Cycles with original settings (~11sec) 1 Frame rendered in Cycles with thibsert's suggestion (~6sec-8sec) Clip rendered in Cycles for reference (forgot motion blur): https://...
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0 votes
0 answers
120 views

Issue with rendering animation Blender 3.1

Blender3 seems to have a problem with rendering animation for two models interacting together if both are complex (or it's just me). Specs: Blender3.1 on both OS's, Windows 10 Pro / Ubuntu 20 (Tried ...
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2 votes
1 answer
38 views

Can you optimize Armature performance in Blender?

My scene contains one character model from Street Fighter V, and I get around 5fps. It's strange, since I can easily run that actual game at 60fps, but I suppose there are reasons Blender would be ...
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2 votes
1 answer
144 views

How to export single animation to GLB used in multiple objects?

I have a scene where I have three cubes, rotating at the exact same speed. I want to export this to .glb so that only one animation is packed into the .glb, to optimize the file size. I have tried ...
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  • 1,126
0 votes
1 answer
78 views

How To Create A Normal Map Of Woven Wire Design

I'm creating a microphone model but I'm struggling with the woven metal wire mesh. This is what I want to create: The image is from here. The woven design was easy to model but due to the poly count ...
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  • 143
1 vote
0 answers
30 views

Has camera culling & crop to render region no effect on freestyle calculations?

I'm rendering a large environment scene of 3.000.000 triangles with freestyle outlines at high output resolutions. The geometry is optimised, textures are basic and I've done what I could to avoid ...
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  • 475
0 votes
0 answers
34 views

Which disintegration/reveal/build effect is fast for millions of vertices

I am rendering for disintegration/reveal/build(the built-in modifier) for millions of vertices. I learnt disintegration & reveal effect from popular Youtube tutorial using geometry nodes. They ...
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0 votes
0 answers
18 views

Move bones to match mesh

I would like to do real-time face mocap in Blender. I found a number of tutorials online doing so like this: record video from camera use face landmark detection to detect position of the nose, chin, ...
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  • 353
0 votes
0 answers
61 views

Blender running slow when editing rig, changing poses, and during animation

I've posted a similar question in the recent past, and have gotten some good advice, but it didn't solve the problem. Currently, I'm working on an anime-styled female character. I've completed the ...
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2 votes
3 answers
349 views

How to avoid white lines in texture while resizing

Sometimes I need to downgrade the resolution of the texture of a model to optimize it for web visualization. To do that i just take the texture in photoshop and export them with a lower resolution and ...
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  • 23
0 votes
0 answers
71 views

Blender Cycles Render Speed Optimization for animations

i have a couple of questions about speed optimization for Cycles Render Animations. Many of the posts that I have seen refer to older versions of Blender and are sometimes a bit contradictory. I´m ...
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  • 305
0 votes
1 answer
86 views

Rendering Issues

I am having difficulty rendering my animation. The project file itself is pretty simple with the majority of verts being from a Blender Kit asset. The total amount of verts is rather low for a sene ...
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0 votes
0 answers
70 views

"Blend from shape" increased file size. How do I remove vertices from shape keys / optimize shape keys?

I have a blend file that has a huge number of shape keys. 20mb. That's fine. The problem is after I did some work on the shape keys and ended up screwing up ALL of them. That's fine. All I do is "...
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1 vote
0 answers
25 views

Import render settings from another .blend file [duplicate]

Is it possible to import render settings (e.g. how many times the light paths bounce for Cycles) from another .blend file? There are too many of them and I don't want to check and copy each one ...
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  • 1,733
4 votes
1 answer
113 views

Optimal renders of the same scene from multiple cameras

I am using Cycles with OptiX to render a lot of different camera angles of the same scene. Using code like: ...
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0 votes
0 answers
78 views

Volumetric Light Cache in Blender Cycles

I have been using some pretty heavy volumetrics in Blender Cycles recently, and I am planning on making an animation with them that will most likely take ages to render at any quality level. I know ...
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0 votes
0 answers
78 views

Blender freeze after 120-150 Frames rendering

my blender freeze after rendering an animation after 120-150 Frames. This is really weird, because It never happens on my 980 ti, and now I've got a 3090 rtx and it freezes. Somebody have an idea? In ...
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  • 343
0 votes
1 answer
74 views

FPS drop when positioning the character

My problem is as follows (is a model ported from SFM to Blender) Animation attempt unsuccessful Solid Mode When I create a frame with the rig or in positioning mode, The FPS ends up dropping to 3 or ...
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0 votes
1 answer
58 views

What is this group that applies transforms onto objects?

I downloaded an asset kit which when imported into blender places objects inside some sort of group (screenshots below). On their own objects have incorrect size and rotation, but when placed within ...
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  • 107
0 votes
0 answers
45 views

How small can you make a model realistically?

all! I have a model that I want to add to a THREE.js scene on the web, so making it as light as possible is the main goal. I'm not an expert, so I have no idea how 'small' one could make a model. ...
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1 vote
0 answers
76 views

How to optimize super large objects for large scene rendering

we are trying to render a large solar farm. For this we used procedural textures, pipes with textures you name it. Each solar panel strip is about 100m / 100 yards long. Our goal is to have a complete ...
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  • 21
0 votes
1 answer
581 views

More time is spent on render preparation than on the actual rendering. What can I do? [closed]

I'm new to blender and I'm stuck on this giant unsolvable problem that no one seems to have any solution for. I've modelled a quite complex scene in Blender: roads, bridges vehicles, buildings, trees ...
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0 votes
1 answer
105 views

Do invisible polygons influence rendering time using Cycles renderer? [duplicate]

TL;DR The number of polygons has negligible impact on rendering time. I'm having a furniture designed part by part using FreeCAD and exported as Wavefront OBJ (following Tutorial Render with Blender). ...
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0 votes
1 answer
38 views

How to improve texture brush result

I have a couple brushes that I got off of BlenderKit. The link for the brush is this: asset_base_id:66dcf513-f78f-4030-a07a-fcfe9c6a1448 asset_type:brush. I have a cube as a test that has 49152 ...
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  • 186
0 votes
0 answers
263 views

Modelling game foliage, such as trees, bushes and grass

So I'm currently practicing my skills as a environmental artist. The scene I am currently making will involve a lot of foliage, specifically a Hatian forest. I have been trying various ways to make ...
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  • 98
2 votes
0 answers
83 views

How can I go about optimizing textures?

I've modeled six rocks, unwrapped all six of them in one texture, but after painting three rocks I decided to reuse them for the remaining three. Is there a way to move these UV islands around along ...
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  • 21
1 vote
1 answer
153 views

Efficient Landscape Mesh Optimization

I need to render an expansive landscape on a render target which lacks the ability to do heightmap-based displacement or mesh subdivision operations in hardware. Thus my only option is to bake the ...
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1 vote
0 answers
74 views

Script performance issues. Applying modifiers to mesh with shape keys

I didn't write the script, I can read it, but can't do much else. This script is used for applying subdiv to a mesh with shapekeys, while preserving the latter. However it seems to be leaking a lot of ...
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1 vote
1 answer
173 views

Is there anyway to resize textures?

My file size is quite large and takes forever to load all images into vram. I used a lot of ~3K PBR textures found on poliigon and I wish I used 1K textures instead. Is there anyway to select the ...
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  • 107
3 votes
1 answer
369 views

How come the Blender 2.83 Splash Screen by Ian Hubert takes so much less time to render than my Doughnut tutorial?

I'm completely new to blender and going through the Doughnut tutorial at the moment. I'm working on an old laptop (GTX 850M, i5-4210U, 8GB RAM) and the doughnut and cup together take about 10 mins to ...
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1 vote
1 answer
473 views

Quick keyframe frame insertion for Shape Keys with `foreach_set` from data

I would like to animate an objects' shape keys from a data set. Imagine a default cube that will get longer (side face vertices will move in +X direction) according to a data. The date looks like this ...
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  • 37
0 votes
1 answer
205 views

Will applying Decimate Modifiers speed up Blender?

I'm working on my first big paid project and I'm coming across a lot of problems. I'm not sure what Blender can handle, but my project was something like 6 million plus faces. I'd simply click a ...
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0 votes
0 answers
25 views

Proper modeling to sculpting process

So here is the issue I am facing. I first model my ... well.. model and I then bring it to sculpting and at around 1milion+ polygons ( or tris and other stuff) I start getting really laggy. I mean my ...
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2 votes
1 answer
482 views

How do I optimize my large grass system to render quicker?

I'm working on an animation which has a lot of natural landscapes, and I'm using a particle system to generate grass (Models that come with the Graswald addon). These frames take a long time to render ...
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  • 121
1 vote
1 answer
77 views

How do I optimize this planar object's vertices?

So in a nutshell I want to optimize the vertices in my object, more in some parts and less in others: https://www.youtube.com/watch?v=jvrh6rbrnbQ Currently the object is planar, but I do want to ...
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  • 111
0 votes
0 answers
55 views

How to eliminate holes/bubble inside the volume of an object with blender [duplicate]

I’m a beginner and I obtained my object, a mandible, from the CT-scan of a patient. The problem is that inside of the bone tissue there are areas denser than others. To obtain the .stl file I have to ...
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  • 1
1 vote
1 answer
2k views

Blender doesn't use system resources optimally

let me just preface this by saying I am new to Blender and have a very minimal knowledge pf it as of now. The problem happened as I was following along with a tutorial and while doing a cloth ...
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0 votes
0 answers
505 views

Optimize Blender for macbook pro 2011

So I'm really new to blender, barely been 6 months. I use a Macbook Pro 2011 running a 2.7 GHz Intel Core i7 2620M with with dedicated graphics, with 4gb of RAM(Yes I know.), and 750gb HDD partitioned ...
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1 vote
2 answers
260 views

How can I unsubdivide regions of flat faces with Python?

First: I have a very detailed mesh (16M tris) but there are many regions where lots of faces have the same height and angle. An optimization approach (real time rendering is the goal) is to select a ...
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2 votes
2 answers
371 views

Reduce subdivision quality in viewport on multiple objects at once

I increased the viewport quality on my subdivision but forgot to reduce it after finishing the model and have since duplicated the model like 60 times, is there a way to turn down the viewport quality ...
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1 vote
1 answer
899 views

Why does memory and file size increase when objects are joined?

Why does memory file size increase when objects are joined? As you can see from the pic I am working on a building. When the objects are not joined file size is 50MB When I join them the file size ...
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  • 501
4 votes
0 answers
130 views

Hacks for improving performance on large scenes

Hi I’m using blender mostly doing exterior architecture visualisations. Through previous months I’ve found many problems that affects this software. But the main issue is lack of performance power ...
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1 vote
1 answer
30 views

View object with used texture

I'm working on a project with a lot of objects, I want to make the file a lot smaller, because its overloading my hardware. I want to see which objects are using the selected texture. I'm in the ...
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3 votes
0 answers
93 views

How to optimize Viewport for video editing on low-spec hardware?

I downloaded blender in hopes of using it for simple video editing, and while it appears to have all the tools I want, trying to preview the video is simply not working well enough. The preview is ...
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  • 31
1 vote
0 answers
35 views

Pose planning for reflective surfaces. Difficult mathematical / geometrical problem . Possible with blender?

first of all this is not a blender - specific question, but i would like to realize it if it is possible with blender since it is open source and can be combined with python programming. I am working ...
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  • 161
1 vote
0 answers
23 views

Eevee - Viewport Render image vs F12 rendering (speed) [duplicate]

I wonder why Eevee renders slowly when pressing F12, while viewport rendering does the same exact picture (down to the pixel) but takes less than a second. Where are these seconds lost ? What kind of ...
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1 vote
1 answer
220 views

Does Blender bloat unnecessarily the Windows Registry?

According to Revo Uninstaller, Blender adds more than 4400 registry keys to the Windows Registry. They are almost all spread in Registry folder: ...
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  • 113
0 votes
1 answer
123 views

Good amount of Tris for a mobile game? [closed]

What would be a good amount of tris for a character that will be used in a mobile game? So you have an idea lets say a mobile game like Clash Royale, I'm of course trying to keep it low but I just ...
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