Questions tagged [performance]

Questions pertaining to software performance or computational speed of Blender should use this tag. (Do not ask hardware specific questions. They are considered off-topic)

Filter by
Sorted by
Tagged with
6
votes
2answers
285 views

Need Technique for Projecting Countries onto the Earth

I've got a project I'm on where I must project some shapefile generated country surfaces onto a globe. Here's where I am currently... Now, the shapefiles I used have excellent vertex resolution about ...
0
votes
0answers
15 views

Blender performance not improving when disabling viewport physics but does when deleting it

I'm having a very simple problem. I'm using dynamic paint to create ripples on a plane mesh. Something perplexing is happening; when I disable the Dynamic Paint viewport icon (so that it will only ...
0
votes
0answers
14 views

Shrink-wrap modifier causing heavy lag to the parent mesh

Following a tutorial for Blender 2.79. Yes, I know. I'm trying to model a Dodge Challenger, and I used a shrink-wrap modifier to more or less "attach" them to the parent, or target mesh (...
0
votes
1answer
23 views

Super Laggy when moving vertices, in edit mode, where it shouldn't be laggy

I'm a new modeler here, and its been pretty smooth, until now. I have been working a Dodge Challenger for the past couple of weeks, with almost no speed bumps or anything. With subsurf, The total ...
0
votes
0answers
23 views

Blender performing very poorly

I'm trying to follow the tutorials, but the program is freezing up and lagging very often and very severely to the point that I can't do some of the steps of the tutorials such as sculpting because I ...
0
votes
0answers
21 views

How do I get viewport FPS higher when using image sequence as plane?

When using a high-res (4k) image sequence plane in Blender, the eevee viewport FPS tanks down to an almost unusable rate, despite there being just one plane in the project and my hardware being ...
0
votes
1answer
495 views

How to troubleshoot Blender 2.83 crashing

I’ve just added a GPU to my system in the last few days that has allowed me to upgrade from 2.79 to 2.83 YAY!!! A few times while rendering though I return to my computer to finder Blender has shut ...
0
votes
0answers
40 views

Will Intel I7 4770K bottleneck RTX 3080 when using Blender?

I know that in some cases (for example some games) CPU can be a bottleneck for GPU. I'd like to buy RTX 3080 but I wonder if I'll be able to use It's full potential in blender on my current PC. My ...
1
vote
0answers
24 views

playing with View Layers - are they always all rendered?

I'm playing with View Layers since I have to separate a lot of stuff from a scene. It's working great but I was wondering how it does impact the render performances. If I have, let's say, 10 View ...
3
votes
1answer
198 views

Render is much faster when laptop is plugged in and charging

My laptop seems to be rendering infinitely faster whilst charging then it does when it's not charging for some reason. My setup is an i7 9th gen w/ an RTX 2060. I'm rendering using OptiX. As can ...
0
votes
1answer
99 views

Animation nodes performance

I've been messing around with animation nodes to influence materials in an array of 1500 cubes, creating a simple motion graphic from a simple node tree. I've attached the blend file for reference. ...
0
votes
1answer
24 views

How to get image in real-time? [closed]

It doesn't matter if it works like a capture or if the quality is very low. There's no reason for shadows or light, too. I hope to get only materials' color and shape of model. Just i want real-time. ...
0
votes
1answer
76 views

sculpting is slow on high dpi display

I was about to learn sculpting in blender, and I noticed it's very slow. Just the sculpting. Navigation and everything else is very performant. I tried scaling the blender window so it's 1/4 of my ...
0
votes
1answer
76 views

Blender does not start

Installed Blender on a machine with Core i7 CPU, 16GBs of RAM and an NVIDIA GeForce 650. I managed to run Blender twice. On the third time nothing was shown and Blender didn't load properly, even ...
0
votes
1answer
419 views

Slow Playback of mocap data

I downloaded Animations from mixamo to import into my scene. In the mixamo webapp the animation plays back at 100fps. In Blender 2.8, its 7fps. Solid mode, no modifiers, no materials. No other ...
7
votes
5answers
15k views

What are the pros and cons of using Blender on Windows or Linux?

Is Blender more stable on some Linux distributions, or just on Linux at all? I am contemplating dual-booting my computer and partition some of my HDD for Linux to use blender there. Would there be any ...
0
votes
1answer
70 views

How to prevent Blender from crashing when running out of memory?

I'm waiting for like 5 minutes for a render to start, nothing happens (Blender 2.90.1) and Blender is crashing in the end. I already tried to render the project using Blender 2.83.8 but I'm getting ...
0
votes
0answers
9 views

Same file, slower FPS baked data playbak in weaker computers

When playing back a fluids simulation on the 3d viewport (just the simulation. No mesh, no lightning. Just the baked data): I get low FPS on my beefy PC, while I get better FPS count on other machines ...
0
votes
1answer
24 views

Are there downsides to increasing viewport samples?

By default the viewport samples are 32 (at least on my machine). This gives me a rough render fairly quickly when the viewport isn't changed. But are there downsides to increasing this number? ...
0
votes
0answers
28 views

WilI always more cores and threads translate to better performance in blender? [duplicate]

After writing I guess a 3 page essay describing my problem and after about a year of inactivity on stack exchange I remembered to sum up my problem, so please if you need more details tell me in the ...
3
votes
1answer
2k views

Why does cycle rendering only use one core from an AMD GPU?

I am using Blender 2.77 and an R7 250 GPU on Windows. Compute Device >> OpenCL (Oland). OpenSubdiv >> (Tested with all). Device >> GPU Compute.
11
votes
4answers
10k views

Should I wait when Blender isn't responding?

By error I placed the angle of the smart uv unwrap to 1 and now Blender is not responding. I guess it calculates the uv. The problem is that I have a lot of unsaved changes on the mesh. Should I wait ...
2
votes
1answer
291 views

Performance: Eevee vs Blender Internal

In my application I use Blender's Internal rendering engine (headless mode) to render quick mock-ups of various items. BI yields plenty quality, however speed is essential (it's a web app) and I wish ...
0
votes
0answers
23 views

Videos from my cell phone have slow playback in VSE preview

Usually when I drag a video from Zoom or my Cannon camera, the preview will play back at full speed. However, when I drag in a video from my cell phone, it only gets ~3 FPS. (Interestingly, the video ...
1
vote
1answer
126 views

Too much RAM after load scene textures in high resolution [duplicate]

My current project contains many object with 2K and 4K textures. I don't have problem with RAM during render, but only when I open this scene. It take more than 20GB and it take long time to display. ...
1
vote
0answers
201 views

Why is my viewport performance (a lot) slower when using solid mode compared to rendered (eevee or cycles)?

When I use solid mode for my viewport Blender suddenly becomes very slow and laggy. I can still move the camera around or change stuff, but only with a lot of delay. When I switch rendered mode the ...
0
votes
0answers
15 views

How to overcome odd lag in texture painting mode?

My first post here. I have just recently started to use Blender (running the latest version) and was working on some very easy tutorials today. I'm suddenly stuck at the texture painting part since ...
0
votes
0answers
22 views

PC freezes while handling Multires high poly scenes before VRAM is fully used

I'm somewhat new to Blender, and lately I've been trying the new Multires for sculpting high detail poly models. From what I had seen online I was under the impression you would be able to reach very ...
-3
votes
2answers
114 views

Does CUDA matter for Blender performance? [closed]

Does CUDA matter for Blender performance? What about CUDA and Cycles performance? What about CUDA and Eevee performance?
0
votes
1answer
127 views

My rig performance is so slow! Hide Geometry in a referenced rig?

I have quite a long project ahead of me and made my own rig, model etc. The retopo is good, the rig not too heavy and I have a fairly good computer, nevertheless while animating I just can't get over ...
0
votes
0answers
155 views

Blender 2.9 instantly crashes when I try to render in Cycles

Blender 2.9 crashes instantly when I try to either render the viewport in cycles or when I try to render the scene in Cycles. My computer: Mac Pro early 2009 OSX 10.13.6 High Sierra 3.33ghz 6-core ...
1
vote
0answers
163 views

1 Nvidia 3090 or 2 Nvidia 3080s for a 3d workstation? [closed]

Currently I'm running very large scenes for particle animations / simulations. I'm particularly concerned about the memory management distribution of the 2 3080 gpus approach for these very memory ...
0
votes
1answer
79 views

Poor Undo Performance: Blender 2.9

I'm having issues with Undo locking up Blender on the first undo action following some action. This happens whether I remain in one mode, or on one obj. Basically say I rotate a joint and I don't like ...
0
votes
0answers
11 views

Edit mode performance problem with using n

I'm not entirely sure what caused this, but I was playing with a point light and the Eevee settings for shadows. Then I did an indirect lighting bake but deleted it afterward. More I can't remember. I ...
0
votes
1answer
139 views

I have better than optimal hardware but Blender keeps crashing

I am trying to get started using blender and follow a simple tutorial to get used to creating abstract renders for design work. While running blender even performing the simplest of tasks my computer ...
0
votes
1answer
117 views

Is there a way to limit the number of CPU Cores used for physics baking?

Is there a way (in Blender) to limit the number of CPU Cores used for physics baking, like you can with rendering?
0
votes
3answers
5k views

Slow sculpting on high density meshes

iv'e seen people sculpt meshes around 5 mil verts with no lag whatsoever, but everytime i come close to like 1m and above the lag starts to be noticeable and soon any sculpting becomes unusable. Im ...
0
votes
0answers
16 views

Driver to Texture Animation Playback Slowdown

My Animation playback speed in OpenGL 3D view (solid mode) dropped from well above 25 fps to 0.3 fps. As it turns out, the reason is a Driver added to a texture used on a huge number of objects. More ...
1
vote
1answer
2k views

Is there a way to determine why Blender is running so slow?

I have a pretty large project (about 1GB, 4 scenes) and recently Blender has become too slow too use. A couple of annoying things, other than just lagging are: I can not scale or move objects with ...
1
vote
0answers
53 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 ...
25
votes
1answer
9k views

Python performance with Blender operators

In my script, I have for loop over many cube objects (~1000) and the treatment is very slow. Looking more in details, I notice that in the same amount of loops: if ...
0
votes
0answers
32 views

Utilize more threads in viewport

I've got a threadripper 3960X, which is great for rendering. However, when I have a large scene and am moving around in the viewport (no animations or anything, just a ridiculous amount of verts) it ...
0
votes
0answers
22 views

Slow fps on animation playback, even without modifiers in solid mode

In Blender 2.83, I'm getting extremely slow playback speed on animations. The fps is at solid 60 before any keyframes are added, but as soon as just a single keyframe is added the fps plummits to ...
0
votes
1answer
182 views

Lag when viewing meshes in texture shading mode

I've been working on a ps1-style model, very low poly, and was UV mapping some textures onto the mesh, but when I tried adding another texture, the viewport started lagging a ton. I could still move ...
2
votes
0answers
95 views

Blender too slow for my new computer?

I just bought a new computer and I was following the donut lesson of Blender Guru. When I raise up the number of subdivision of the donut (Viewport) to 3, the problem starts. I can not smoothly move ...
0
votes
1answer
74 views

Issue with Collada export on Mac OS Catalina

did any of you experience a problem with Collada (.dae) export of bigger files? I have a blender project with a number of animations (11 MB in total). I've recently updated Mac OS from 10.14 (Mojave) ...
3
votes
1answer
623 views

“Updating Objects Flags” — Best ways to get around long rendering times?

I'm currently trying to render an animation that taking 15 minutes to render one frame. Whilst watching the render, I can see "Updating Object Flags" stage seems to be the main culprit. The ...
0
votes
1answer
76 views

Why is my viewport frame rate so slow?

My pc has a CPU- Ryzen 9 3950X GPU- Quadro RTX 5000 RAM- 124 GB of G.skill Trident Motherboard- Giggabite Aorus x57 SSD- Samsung 970 Nvme M.2 1TB in it. But, when I use the "Grassgwald" add-...
0
votes
0answers
12 views

Slow execution and options not available RTX nvidia

Blender GIS 2.83. 1) I cannot find the setting for GPU. Mine is nVidia RTX super 7000. 2) This and other settings for cpu and gpu, I cannot find them in Preferences/System. Surprisingly slow: I have a ...
0
votes
1answer
36 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 ...

1
2 3 4 5
8