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)

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Terrible VSE output performance when rending

I use Blender as VSE. I was going to edit some clips. my setting is in screenshot. Blender version: 2.81a, download from Steam. OS: Win7-64bit My Hardware: i7-4790k with 16G memory Nvidia Geforce ...
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28 views

Performance issues on Cycles OptiX (GeForce RTX 2060)

I have recently bought a laptop with Nvidia GeForce RTX 2060 and Intel i7-9750H. I immediately updated drivers and tried running a simple test rendering and I used to get these results: CPU: 3 ...
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36 views

Integrated Graphics Requirments for Newer Laptops?

I'm buying a 10th Gen Intel Core, HP laptop. The specs say it only has an Intel Graphics Coprocessor. Will it run blender 2.8? https://www.amazon.com/2020-HP-Touchscreen-Premium-Laptop/dp/B081SM57RY/...
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Low FPS Blender(viewport)

Started using blender, FPS was great, but the UI was flickering. Googled, I didn't have an opengl32.dll in the directory, then added it. UI Flickering gone, but FPS dropped drastically. Would like ...
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29 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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1answer
90 views

OSX Eevee performance with multiple materials in OSX

EDIT 2: Thanks to a user posting a detailed technical explanation as to why the bug is manifesting (TL:DR, certain material properties cause multiple calls to the shader compiler in the AMD driver ...
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31 views

Blender 2.81a is slow on Macbook pro when selecting items from the Properties window

I recently got a new MacBook Pro so I have more free space on my computer's memory than ever before and yet my properties window still makes blender run slowly. My Macbook pro is a new model so it's ...
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3k views

Is it possible to render a movie on a single computer in blender?

Is it possible to render a fairly graphical movie on a decent gaming-computer, with a GTX graphics-card, 4 2 GHz core CPU and 8 GB of RAM, or do you need to have a gigantic rendering-farm like Disney? ...
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28 views

Screw Modifier Best Practices

I am creating a three-strand rope in blender using the screw modifier and was wondering what might be best practices for making a long rope. Essentially it is a choice between iterations or degrees. I ...
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Script runs very slow when changing parameters in Add Object menu

I've made my first addon based on an internal blender Text editor template. It is used to add primitive meshes and then control some of their aspects, much like adding primitives like Cubes or UV ...
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38 views

Blender Benchmark crashes

I tried to run Blender benchmark because I felt it was a bit slow today working and the GPU was being used intensively in the task manager while sculpting, and I didn't used my new laptop for 3d too ...
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43 views

Viewport performance, i9-9900k vs Ryzen 3970x?

(Apologies in advance in case this is the wrong place to ask this!) I'm building a new workstation and trying to decide which CPU to go with. Does the viewport performance in Blender benefit from ...
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23 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) ...
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48 views

Blender on Surface Pro X [closed]

Blender will not work on the Surface Pro X. It runs, but it doesn't recognize the GPU in the machine and shuts itself down. All my drivers and firmware are up to date. The GPU should be more than ...
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1answer
80 views

Should I enable both my CPU and GPU in the CUDA preferences? [closed]

I am using blender 2.8 on windows 10. I have a question about System CUDA options. There are two checkboxes one for my graphics card GeForce GTX 2060 and another option for Intel Core i7-4790 CPU @ 3....
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22 views

large poly count performance

I tried loading a model with a large number of polygons - it really made blender 2.81 crawl. 6.4 million-triangle 3D scan of the Bust of Nefertiti. aem_aem21300_3dsl01_mo08-03_p.obj from https://www....
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53 views

Cycles Smoke render - Extremely poor performance & crashes

I have a decent new build: 3700x + 2x 5700XT, 32gb ram, using 2.81. I thought smoke rendering for a fairly simple scene would be a breeze (excuse the semi-pun) but for a render of a scene containing ...
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57 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 ...
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17 views

How to make performance test while render my scenes

I want to do a performance test via scenes that I created. Could you give me some tips or applications which will check performance in the blender? GPU, CPU, Memory usage? Or maybe it's possible to ...
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7 views

Why does my project run so much faster in Texture Paint mode than in Layout mode (and sprites render without alpha)

I have a fairly complex scene that is running pretty slowly (not just to render, but the whole GUI is running sluggishly). I think it is because I have a smoke simulation in the scene but I am not ...
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1answer
166 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 ...
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11 views

Performance hiccups on the first frames

I started noticing something really annoying in my PC. I'm running Blender 2.80 with a GTX1080Ti, Ryzen 7 1700 and 16GB DDR4 RAM. Everytime I move my camera or zoom in or move an object there is a ...
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16 views

Rigify rigs in Blender scene are making some very bad lag. How to fix performance issues?

I have a scene where there are 2 human models rigged with rigify. I cannot animate these anymore because when they're in the viewport, I get about 6 FPS on the animation preview. I know for a fact ...
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1answer
67 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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41 views

low framerate and crashes in the viewport by using not even up to 30% GPU and CPU

Hello im new in blender and wana ask is that normal by my PC that it this scene if i play it for the first time i got 1 to max 15 fps . And my GPU and CPU usage is not even by 30% . And if i for ...
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62 views

Desktop GTX 1070 barely faster than GTX 1050-Ti mobile in cycles

I'm rendering 10 frames of a scene both on a Dell XPS 15 Notebook and my Desktop PC. Desktop: i5-2500K + GTX 1070 8GB Notebook: i7-8750H + GTX 1050-Ti mobile Desktop: CPU (i5-2500K): 2:34 min GPU ...
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34 views

Intel optane, does it have any benefit in Blender?

I heard Intel optane has benefit in 3d application by making them load faster and other benefits include 3d modeling. Blender already loads faster than the other 3d applications I use and we have the ...
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15 views

Super long transition from one frame to another in Cycles' rendering animations!

I'm rendering a 4 minute animation that's AV-synced to my new song. So far, I have followed pretty much all possible my Cycles rendering, namely increasing the Tile Size for GPU Compute, lowering ...
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13 views

Blender 2.8 cannot save document, or cannot re-open a document (sculpting) and crashes my whole computer

I run Mojave 10.14.6, 8 GB My downloaded Blender 2.8 from the blender 's website two weeks ago. It seems rather random. In sculpting mode, some files suddenly won't save. Instead the program freezes ...
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42 views

Sculpting bad performance

I have an AMD Radeon RX Vega⁶⁴ graphics card and is experiencing slow performance while sculpting. Is there something wrong with the graphics card, or a bug in Blender? This just seems really odd, ...
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12 views

One of my Sculpting files is crashing Blender when I try to open it

My Blender 2.80 (2019.07.29) worked beautifully until last night. It froze each time I tried to open one specific file (in Sculpting). It was big, but not the biggest (which keep opening fine). The ...
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21 views

how can i improve script execution time

Is it there a control or something to assign more resources to script execution. Or the only option is to improve script's code performance?.
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60 views

Blender 2.8 general frame lag

With the recent release of Blender 2.80, I was expecting it to be as polished and lag free as 2.79b I guess I set my expectations a little too high cause I'm disappointed it still feels like it's in ...
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94 views

No render speed difference in Eevee cpu vs gpu

My gpu got damaged last night so I removed it and started using blender with cpu only. I found that there is no difference in render speed or performance between cpu vs gpu. 2 second per frame on cpu ...
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1answer
46 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 ...
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48 views

Blender file taking over an hour to load, is this normal?

System spec: Threadripper 12 core, SSD, 32GB RAM, 2080ti File details: 40MB .blend 10 million verts in a curve. File creation details: Curve created via importing of a very large and complex SVG ...
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Blender for competition? [closed]

I am in a competition. I am literally 2 weeks into game dev, and rarely use Blender. I normally just use it for a brief tutorial, and if it works, it works, if not, I just forget about. So the ...
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107 views

Saving blend-files straight to server nets 0.5% speed of a windows file copy, how to fix?

Some context: Part of our company (about 3 fulltime people) do ArchViz, we're using Blender 2.79b and are transitioning to Blender 2.8. Tests underneath were done using 2.8. I'm not an artist myself ...
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546 views

AMD RX 570 GPU slower rendering than NVidia GTX 1050 Ti?

I recently built a new PC running on a Ryzen 7 2700X CPU and AMD Radeon RX 570 GPU. However, I'm getting significantly longer Cycles rendering times than my old Intel i5 PC running on an older NVidia ...
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26 views

Collection instances are just like prefabs?

I wonder why unity can load for instance 100 000 objects ( prefabs) and handle them inside the viewport quite well, while blender struggles to even move just 10 000. Would it be easier for Eevee if ...
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42 views

Cycles: Build without SSE and AVX

I am trying to benchmark Cycles performance without SSE, with SSE only, and with AVX instructions. I am finding weird behavior where if I switch off the "WITH_CPU_SSE" flag in CMakeLists.txt, the ...
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28 views

Texture Painting stuttering

i am having an issue where whilst I am painting (on a new layer, effecting Alpha) the stroke is very 'bumpy', and stutters. I have attached a video to demonstrate. I'm in Look Dev in the video, and ...
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1answer
180 views

Sculpting Performance Workflow

I'm new to Blender and using it to sculpt a character. I have been using Dyntopo for the majority of the mesh up to the point where i got to maybe 1 mio vertices, where I have started to subdivide the ...
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1answer
143 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 ...
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147 views

What does tile size actually affect?

Besides the obvious you see is the blocks you see when rendering, I see it changes the size of the samples and from tips and testing it can affect render times, typically higher size (eg 256x256 ) on ...
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2answers
34 views

Render times changing over course of render

I started rendering an animation in cycles in the late after noon than went to bed with it rendering rendering at around 25 sec per frame (when tested at what should of been the most labor intensive ...
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1answer
34 views

Is a large UV map heavy on performance while playing?

I have a very large UV map for a house of mine. Due to the nature of the shingles being single duplicated objects, I have quite a giant UV map when exporting and importing for Unreal Engine 4. Does ...
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1answer
77 views

Tips on reducing Polycount in Scene

I have a problem. There is a lot of figures I created for an art project in my school. I used UV Spheres as models and smooth shaded them. In the end I had 35 million vertices and as you can see ...
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1answer
251 views

Slow Performance When Changing Object Data [2.8]

I'm not sure if it's the object data actually, but I couldn't think of a better way to phrase it. Whenever I ctrl+z, change materials, open/close the file, make or change collections, etc, it takes ...
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379 views

EEVEE render not using GPU fully

I am rendering PNG RGBA frames in EEVEE of a camera fly over a historic building modeled in Blender 2.80.74. PC specs: i7 with 20GB, 1Gb SSD and a GTX 1070 & GTX 1050. EEVEE uses only the GTX 1070....