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)
373
questions
1
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0answers
128 views
Limits of uv unwrapping in blender 2.80
I've been researching how Blender uses the CPU. It seems each algorithm is different where some may use all cpu cores, others may only use 1 or 2 cores.
I am trying to unwrap a very high poly count ...
1
vote
1answer
92 views
How to allow blender to only use part of your CPU computing power?
Is there a way to only allow blender to use part of my computing power? For example, I don't want blender to use more than 25% of my CPU computing power. Please make sure that it doesn't shut off ...
0
votes
0answers
43 views
How to improve render time and render farm recommendation?
I'm planning to render 5 - 10 sec animation of different interior spaces within the project. I wonder for this type of scene (denoised), what can I do on my render setting to reduce the render time ...
1
vote
1answer
84 views
Does decimate an object helps cycles rendering faster in blender?
Does decimate an object helps cycles rendering faster in blender?
If we decimate the object and use smooth shading, will it render faster specially in those scenes where lightning matters the most?
0
votes
0answers
24 views
Does physical size of an object impact performance?
Pretty much what the headline says. However to be clear, does a 1m cube cost less in performance compared to say a 10m cube? I assume it does but I couldn't find a definite answer to this anywhere. I ...
0
votes
0answers
52 views
Blender runs very slow on my laptop and freezes a lot
Blender runs very slow on my laptop and freezes a lot. I did everything to fix it but it didnt work, so I'm thinking the problem might be my computer.
Here's the properties of my laptop:
Operating ...
0
votes
0answers
9 views
Why my blender cant open after updating gpu driver
After i update my gpu driver my blender cant open,
Spec : windows 10 64 bit,
Intel core i5 7th gen,
Intel hd graphic,
Radeon tm 520,
Ram 4 gb
Free space 500gb
0
votes
0answers
25 views
Why these two same projects, renders at different speeds?
I was having problems with rendering for a long time, which caused hours of rendering a single frame when the scenes weren't soo complicated. I was messing around with the settings yesterday until I ...
5
votes
0answers
115 views
Cycles Renderer - Updating Shaders and Images Every Frame?
This question is more of a curiosity to the potential of increasing render times, however, after finding very little out about this anywhere else, I am thinking it may be an intentional feature.
I am ...
1
vote
1answer
196 views
Does Blender support threading for data processing?
One of the most time taking part while working with images in Blender is to get pixels to numpy arrays and then to assign them back. As Blender supports multi-thread render I've thought it could be ...
1
vote
1answer
91 views
Does mesh size affect performance/should I make my object life-size scale?
All of the things I've googled regarding this issue deal with what to do when your mesh is at real life scale but is really small.
I want to make a giant creature and put it in an environment that ...
0
votes
1answer
683 views
Blender 2.82a very slow compared with 2.79
I am coming back to use Blender after a bit of a break of a couple of years. I did a lot of work using version 2.7x. I am now trying to use version 2.82a.
My PC is running Linux Mint 19.3 I have ...
1
vote
0answers
28 views
Confused by the difference in render time between two projects
I'm still a beginner with Blender (been doing stuff occasionally for a year now), so I've got no knowledge about the intricate technicalities of rendering but this is the first time I'm really ...
0
votes
0answers
25 views
Troubleshoot performance?
Are there any tools or options to help troubleshoot performance? When using blender, every few seconds I get a split-second of lag. This interrupts any smooth movements, like transforms, or scrubbing ...
1
vote
0answers
22 views
swap “disable in viewports” and “disable in renders”
I'm working on a big project and to improve performance I have hidden a lot of modifiers and objects in viewports. But now I want to see how the current full version of the project looks like in ...
0
votes
0answers
39 views
Why doesn't Blender use all my hardware … CPU GPU?
I'm rendering a 1080p video clip, it's so slow. The question is; why does blender only use 20% of my CPU and 35% of my GPU? Do you have any suggestions or videos on improving this? It takes 45 minutes ...
0
votes
0answers
366 views
Blender and Twinmotion
I am a landscape architect and I have been learning Blender for a few months now and I just started with Twinmotion. Something I don't understand is that navigation fluidity in the viewport with the ...
1
vote
0answers
43 views
How much would Blender benefit from multiple core / threads?
I'm currently building a PC for game development (and regular gaming of course :P) and I have all of my parts chosen (Radeon RX 580, 16gb Corsair vengeance, 256gb m.2, 1 TB HDD, MSI B450 Gaming Plus) ...
1
vote
0answers
87 views
What graphics card is faster than i7
I have a 5th generation MSI BOARD, H77MA-G43 with 16 Gig ram and CPU: i7 3770|3.4GHz.
I render within cycles, the render time of the i7 CPU is 5 times faster than the GeForce Gtx 1050 ti
What graphics ...
0
votes
3answers
11k views
Cycles is painfully slow even for the simplest of scenes
Google shows that Blender's slow rendering has been questioned numerous number of times before too, but in my case it has gone to a degree that rendering even the simplest things requires ages. I'm ...
0
votes
1answer
472 views
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 ...
0
votes
0answers
25 views
Does the adaptive subdivide work for boolean reference objects?
Suppose I have a sphere which I wish to cut out from a cube. Will using the adaptive option in a subdivide modifier result in the hole in the cube being adaptively subdivided as well?
12
votes
2answers
2k views
Optimize cycles background rendering
Is there any trick to increase performance in background-only tiles in cycles. As you can see in the pictures, an empty render takes more than one minute. When you render motion graphics animations, ...
1
vote
1answer
1k 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....
1
vote
1answer
91 views
Blender renders always frame 1 on 2nd computer
I'm using a second computer to CPU cycle render an animation on Windows 10. I have the "common" setup to use the same project file (network drive mapped) on both computers with the same output ...
0
votes
0answers
40 views
Extreme lag in the viewport directly after Startup
I've just installed Blender on my new Surface Pro 7
(Quad-core 10th Gen Intel® Core™ i5-1035G4 Processor, Intel® Iris™ Plus Graphics, 8GB LPDDR4x RAM) and really can't get it to work properly.
(...
0
votes
0answers
219 views
How is my CPU rendering faster than my GPU?
So ive looked through some other threads and wansnt able to find a fix for my problem. Thats why I decided to ask by myself.
The Problem: How is my CPU, a Ryzen 5 2600 overclocked to 4.2Ghz, ...
1
vote
0answers
401 views
Where are the settings to increase cycles threads?
I am trying to adapt the cycles render code to allow me to use the full threading power of my GPU (Radeon RX750 8Gb, 2048 OpenGL threads). There seems to be a limit from some time ago of 1024 threads, ...
3
votes
2answers
1k views
Render using all cores except one (or N)
Is there a way to configure the Blender Render or Cycles to use all the available cores in the machine except for one (or N) of them? I'd like to set a render off in the background but leave me with a ...
1
vote
1answer
169 views
Blender 2.82, two GPU but only one render in Cycle
I'm not sure is this should be like that but, I have two GTX 970 graphic cards...and when I try to render something in cycles, I've notice that only one GPU works about 30-40 % and second one stays on ...
-1
votes
1answer
147 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/...
0
votes
0answers
97 views
Multiple Grease Pencil objects makes Blender lag and eventually crash
I'm trying to make my first 2D animation with grease pencil.
I drew a walk animation of my character frame by frame, about 257 frames, then I duplicate it as object, change location and direction and ...
2
votes
2answers
502 views
How can I get the number of vertices/triangles per object?
I'm working on a scene that's getting complex: I have 30 objects for a total of about 5 million triangles. I start to be concerned about performance.
I would like to know which of the objects ...
2
votes
1answer
190 views
Blender 2.81 render not using all GPUs
I have 2 Nvidia GTX Titan Black graphics cards in my machine, but Blender keeps using only one of them.
I have them both checked in the Preferences > System > CUDA tab but when I render and take a ...
0
votes
0answers
22 views
Improving performance in a blend file with hundreds of different materials?
We use a blend file as a material library at work to append from when we render. The library is starting to crash on some of our computers which has less power and ram (blend file is 800mo with packed ...
0
votes
0answers
51 views
2080 TI staying below 35°C rendering in Cycles. Why?
So I just finished a 24 hour render of a smoke simulation in cycles using Optix with my 2080 TI and I’ve been noticing that my GPU never passes 35°C. I feel like that’s very cool and that I’m not ...
0
votes
1answer
66 views
Is it worth running Linux on my Mac to use the built in AMD graphics card?
Is it worth running Linux on my Mac to use the built in AMD graphics card with Blender? Right now I'm only using cpu and it takes a very long time for high poly rendering. Would it work to partition ...
2
votes
1answer
218 views
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 ...
4
votes
0answers
58 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 ...
2
votes
1answer
323 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 ...
2
votes
0answers
42 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 ...
0
votes
0answers
103 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 ...
7
votes
5answers
5k 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?
...
1
vote
0answers
114 views
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 ...
1
vote
0answers
108 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 ...
1
vote
0answers
141 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 ...
1
vote
0answers
344 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 ...
8
votes
3answers
3k views
Managing/Reducing noise in a night scene
I've been trying to get a pretty noise free image from this scene for a while. And nothing seems to be working. I've been trying to use 3000 samples, then rendering different noise seeds and composite ...
3
votes
1answer
3k 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....
6
votes
1answer
228 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 ...
