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)
382
questions
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18 views
Blender keep crashing, how to properly report? [closed]
We switch last 2 month completely from 3Ds Max to Blender only.
We are very excited, but all our computer somehow keep crashing once in a while, we dont know why or how to track down this problem.
...
0
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0answers
26 views
Viewport performance worsens the longer Blender is open [closed]
Problem: As Blender runs, viewport performance degrades. This performance degradation is irrespective of complexity of scene.
This issue is affecting my work on my laptop, which has modest specs, but ...
0
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0answers
27 views
I installed blender 2.92 (new user) when I launched it it showed a blank screen with not responding at the top [closed]
I'm a new user
Installed blender version 2.92 this morning
It launches the shows a blank screen with an header at the top like this Blender (Not responding)
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0answers
12 views
Sculpting armatured object requires switch to edit mode to see result
Using any brush on the armatured high poly model requires 2xtab (edit mode -> sculpt mode) in order to see the stroke.
The problem is new (could sculpt the high ...
1
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1answer
29 views
Performance of editing/sculpting
I have some performance concerns regarding moving vertexes in either edit or sculpt mode.
blender seems to handle editing better than sculpting. At around 20k triangles sculpting begins to slow down. ...
1
vote
0answers
47 views
Internal recording from camera 3D in Blender, is it possible? [closed]
by chance in blender is it possible to make an internal recording from a 3D camera located in position ''x'', for the performance of the activity in progress? He is then able to exploit the shot for ...
1
vote
1answer
40 views
System is Slow when using booleans [duplicate]
Just started doing some of Blender Tutorials and was wondering why things are slowing down. Not things like pan and orbit, they're fine . But moving booleans around is painfully slow. Like when you ...
0
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0answers
24 views
Cycles Render in viewport extremely slow?
I have two 2080 TIs (both are checked on in the system settings), but cycles takes minutes to becone visible enough through the render noise to see my scene. This doesnt seem right to me....is it,
...
0
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1answer
32 views
Blender is Lagging Suddenly
I just started using blender yesterday. I have been following Blender Guru's donut tutorial, and I have gotten pretty far, but now when I try to sculpt, I can barely see the effect, and when I start ...
0
votes
1answer
30 views
Speed up I/O when using cached simulations
I'm experimenting with fluid sims, so I've been baking and rendering the whole day. One thing I've noticed is that the I/O seems to be really slow. Like really slow. I'm only rendering at 30 samples ...
1
vote
0answers
80 views
Edit mode 2.91 very slow and cpu intensive compared to 2.79
It took me a while to move over to the new Blender version. Got my hotkeys changed and activated my favorite plugins. What I noticed is with relatively low poly objects (100k) the edit mode is ...
1
vote
0answers
55 views
Grease pencil unusably slow
I'm trying to use grease pencil to do some animated screencasting-sort-of videos. I've used it before to do quick animations and noticed that even with a dozen or so vertices the performance drops. At ...
0
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0answers
15 views
Blender crashes constantly
I use a 2018 15-inch Macbook Pro with a Radeon Pro 555X 4 GB graphics card, and Blender crashes constantly. Even the simplest scenes. Like just now I had just started modeling a bowl with a single ...
0
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0answers
11 views
Big lag while Sculpting fine details
I've tried sculpting fine details with alpha maps but it always lags so bad. I've used Dynatopo with constant detail for it which works at first, but then the poly count starts rising and everything ...
1
vote
0answers
30 views
Blender was running fast then randomly became extremely slow to open
I had left a blender file running for a couple days in the backround and went to open it and it wouldn't pop up, so i ended the task. When i went to open blender again it took 5 minutes to open and ...
0
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0answers
14 views
Freezing While Selecting Joints
I'm working on a rig for a pretty simple character - only about 70,000 tris - and Blender keeps going into (not responding) mode every time I select a joint. It resolves itself eventually, but that ...
1
vote
1answer
25 views
Blender crashed computer while baking cloth animation
So I'm following this Tutorial: https://www.youtube.com/watch?v=gFOJ7ul19AE&ab_channel=Ducky3D
I'm following exactly as the video, the only difference is that I'm using an Skull instead of the ...
0
votes
1answer
30 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). ...
4
votes
2answers
347 views
New install of Blender; extremely slow when panning a video
I have read a lot of posts here and on other forums about Blender being painfully slow, to the extent it closes in on being unusable. Here is my scenario:
I have a 11 second 4K video (30 MB file) ...
0
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0answers
11 views
Object turning flat grey in rendered view [duplicate]
hello guys. I'm having problem using render mode on blender on any file I've. The models are not displayed correctly on render mode, not on this file,the problem persist on any file. Cycles or Evee ...
1
vote
0answers
70 views
2.91 viewport lag after certain amount of time
When I open Blender it runs perfectly smooth, but after a while it begins to lag. I close and open the same file and it runs smoothly again, until about fifteen or twenty minutes pass and it starts ...
0
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0answers
129 views
Blender very slow/unresponsive
I tried to search similar topics to no avail. I am a fairly new user to blender. I have been using and learning the program for 4 months now.
Blender has been horribly slow to the point that i can get ...
0
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0answers
28 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
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0answers
24 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 (...
6
votes
2answers
323 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
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0answers
34 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
1answer
36 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
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0answers
24 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
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0answers
161 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
26 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 ...
0
votes
1answer
28 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
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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
264 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
1answer
27 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
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0answers
29 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 ...
0
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0answers
24 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 ...
0
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0answers
29 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
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0answers
29 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 ...
0
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0answers
573 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 ...
-3
votes
2answers
178 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?
1
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0answers
293 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
198 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
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0answers
19 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
0answers
21 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
0answers
56 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 ...
0
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0answers
39 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
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0answers
28 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 ...
2
votes
0answers
159 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
0answers
14 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
56 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 ...