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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Is vector math node slower than math node?

I looked at https://docs.blender.org/manual/en/latest/render/cycles/optimizations/nodes.html#node-optimizations and apparently Blender is pretty good at optimizing node trees. This made me wonder a ...
-1 votes
0 answers
31 views

What am I doing wrong when rigging this character?

I tried making my first full character but after finishing the model I've had some trouble with rigging, I have tried all sorts of things but I just cant seem to make it work like a regular rig, below ...
2 votes
1 answer
36 views

"Merge by Distance" is destroying information about double-sided polygons

I have a mesh in which I want all of the faces to display as double-sided (after exporting to a game engine), so I duplicated the mesh with Ctrl+D and flipped the normals. Then I figured I'd optimize ...
0 votes
2 answers
254 views

Rendering scene background in only some frames of an animation

Is there any way to render a specific scene, say the background, during only the second half of an animation while the foreground renders the entire time? For example in a 100 frame clip could I get ...
4 votes
2 answers
52 views

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 ...
2 votes
2 answers
4k views

Blender 2.78 file size grows and does never shrink

I made a huge project, wanted to reduce file size from 1.3GB to below 1GB. Compressing did not help. I removed objects from scene. Also textures. I then realized, the file size even was the same when ...
1 vote
1 answer
134 views

Rendering particles vs ALT+D copying the object

I have a simple question. Is it better for render time and optimization to add for example Trees as particle system or to ALT+D duplicate it as many times as i need. What will be easier for memory?
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 ...
-1 votes
1 answer
75 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://...
0 votes
0 answers
153 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 ...
1 vote
1 answer
44 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 ...
2 votes
1 answer
222 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 ...
0 votes
1 answer
83 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 ...
1 vote
0 answers
42 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 ...
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 ...
0 votes
0 answers
24 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, ...
8 votes
4 answers
13k views

How to render a scene faster in Cycles?

I have a scene of an office. It has chairs, tables, computers, and so on. I would like to know how I can render this scene faster as I am planning to make animation inside the office and don't want ...
0 votes
0 answers
88 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 ...
4 votes
1 answer
133 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: ...
2 votes
3 answers
369 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 ...
0 votes
0 answers
74 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 ...
0 votes
1 answer
90 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 ...
0 votes
0 answers
74 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 "...
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 ...
2 votes
2 answers
1k views

How to hide all subdivision to optimize viewport

I'm working on a scene that is entirely based on subdivision loops, As time passes by the scene got detailed and the view-port got laggy. I turned off subdivision views to optimize it, but that meant ...
0 votes
0 answers
79 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 ...
0 votes
1 answer
59 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 ...
0 votes
1 answer
81 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 ...
0 votes
0 answers
46 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. ...
1 vote
0 answers
81 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 ...
0 votes
1 answer
645 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 ...
5 votes
2 answers
2k views

Is it possible to dynamically reduce the number particles based on distance from camera?

I want to render an animation in which a car drives along a certain stretch of road. To one side there is a grass field, but this is quite big, both in the direction perpendicular to the car, and ...
2 votes
1 answer
521 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 ...
0 votes
1 answer
117 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). ...
0 votes
1 answer
40 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 ...
0 votes
0 answers
273 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 ...
0 votes
1 answer
61 views

(Beginner) Large metal ceiling optimization

I'm pretty new to blender. I am trying to render a large metal ceiling (over 120m long) (see image) you would not see through it you would not see the edge as it is on the ceiling, the vertical ...
2 votes
0 answers
95 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 ...
1 vote
1 answer
163 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 ...
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 ...
4 votes
1 answer
990 views

How to set up SSS on cycles for efficient rendering

How do I set up SSS shaders properly to render efficiently in animation projects. Are there any specific optimizations to consider? I am trying to render some orange juice in a bottle and getting ...
1 vote
1 answer
191 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 ...
3 votes
1 answer
378 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 ...
1 vote
1 answer
490 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 ...
0 votes
1 answer
220 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 ...
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 ...
0 votes
2 answers
684 views

EEVEE 2.80 toggling render visibility based on camera view

I suspect this is possible, but don’t know where to start. I think drivers might be the key. I want to animate EEVEE render visibility of 24 objects off when the object leaves the camera FOV and on ...
1 vote
1 answer
83 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 ...
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 ...
3 votes
2 answers
1k views

Can blender game engine hide vertices that are not visible to the camera?

Is it possible for the Blender Game Engine to hide any vertices/faces currently not visible to the camera in order to optimize game performance? This would be for parts of meshes specifically.