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
0
votes
0answers
45 views

Is the File too Big or is Blender too Slow?

I am just now getting involved in photogrammetry and as we know the files are quite large. I am importing an .OBJ file from Meshroom and from the import to any other click there is lag. Being new I ...
0
votes
1answer
109 views

Cycles Render CPU Usage Low with Dual Xeon

low CPU usage on Dual Xeon (128GB RAM) when rendering "blenderman" using command line and Cycles on Ubuntu and Win10. Using latest 2.8 build. Single i7 3rd Gen gets upto 100% using GUI and CMD on ...
1
vote
0answers
19 views

Blender VSE slow regarding PC Capabilities [duplicate]

I am quite a newbie at Blender (v2.79b) and I noticed something disturbing while generating videos. I have 8C/16T, all the raw materials are on SSD and I can only see 1 core working on my machine with ...
0
votes
1answer
110 views

Animation Nodes slow performance

I've just started playing with the add-on and created some simple tree to generate tiles but the it works very slow. Currently I have weak machine and the procedure may not be super optima but even ...
0
votes
0answers
25 views

Blender 2.80 crashing when I try to open it?

I have installed blender 2.79 before but when I try download Blender 2.80, unzip and try to open it it's just closes like crash without say anything or any error. When I tried to uninstall the last ...
0
votes
0answers
40 views

Grease pencil in Blender 2.8 Eraser freezing

In my last works I encounter troubles with rubber/eraser, it is working like games on low fps. My current project has 168k points and 1,3k strokes, I remember I had bigger paintings, and everything ...
0
votes
1answer
90 views

Can Cycles take more samples at object borders?

Can Cycles be coaxed to cast more rays in pixels containing a large gradient/discontinuity in depth (or high contrast in brightness)? My scene is fairly simple (effectively an image mapped to a ...
1
vote
2answers
658 views

Very bad performance on Cycles OpenCL using Ubuntu 18.04 and Radeon VII

We've got a new render machine for our Company. Threadripper 1950x + dual Radeon VII + 64 gb of ddr4-3200 RAM. (Only one Radeon installed now for testing) Our CPU testing went flawless. With great ...
0
votes
0answers
100 views

Is Static / Dynamic BVH still present in recent builds of 2.79?

There still is Static / Dynamic BVH dropdown in official 2.79 build: That dropdown to choose between them isn't present in recent builds of 2.79 or 2.8 anymore. Viewport resolution only seems to be ...
1
vote
1answer
54 views

What's the most lightweight format for textures?

I want to know what's the best image format to use on textures that consumes the least ammount of VRAM during render. I'm trying to render a scene in Blender 2.8 EEVEE but because of the textures, ...
0
votes
0answers
32 views

Viewport animation just tanked to 3FPS out of nowhere

I was trying to create an animation and moving some bones around when out of nowhere my formerly 60fps viewport just tanked to 3fps. I'm not doing anything too demanding either, just making a low poly ...
0
votes
2answers
107 views

My blender is so laggy that its unusable, any suggestions

So, two days ago I shut down my computer for a few hours. When I turned it back on and opened Blender, it was extremely slow and still is. (I've tested Unreal Engine and it runs smoothly). All the ...
1
vote
2answers
181 views

performance issue creating many objects

I am trying to use blender (2.79b) for batch visualization of data on Windows 10. Unfortunately, blender gets very slow after creating a certain amount of objects. I tried to improve things by "...
0
votes
1answer
127 views

Critical Problem : Freeze Problem while Modeling in Blender 2.80 Beta [closed]

I'm trying to model something with Blender. But when I switch it to Edit Mode with Tab and, for example, using Ctrl + R to add a new loop, Blender starts responding about 3-4 seconds after my mouse ...
0
votes
1answer
55 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
1answer
26 views

I have view port quality issue (Sorry if this has been asked before I couldn't find an answer)

The image shows my problem it has Choppy edges in the viewport. I looked all over google and this forum but could not find a solution. I have an RTX 2080 and i7 8900k. I fixed it once by creating a ...
1
vote
1answer
302 views

does more processors and cores help performance?

These are my specs -i3 @3.70 Ghz 2 cores 4 logical processors -8 Gb Ram -147 gb C: Drive -1.81 Tb D: drive when I use rendered view in blender the sampling is really slow (like 1 sample per ...
0
votes
0answers
22 views

Blender Performence Issues

My blender has been lagging very badly lately. I don't know what to do. please help. my laptop performance details Intel Core i5-4200U CPU 2.30 GHz RAM 8.00 GB
1
vote
0answers
89 views

is it possible to limit texture resolution by distance?

I know in the simplify tab you can set a reduced texture size for all of the scene, but is it possible to reduce the texture size in vram based on distance from the camera? For example I have a 2km ...
2
votes
1answer
33 views

Does scaling a mesh/curve object to 0 remove its render impact?

I'm currently using the latest build of Blender 2.8 as of this post's timestamp, and I noticed I can't keyframe the viewport visibility parameter (see above) in the Outliner like in 2.79. The render ...
0
votes
2answers
2k 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
1answer
64 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
365 views

Why would Blender slow down in editmode with only 2886 vertices?

Blender slows down in edit mode with only 2886 vertices. I am not sure what is wrong with the file. Can someone suggest a solution to this? My PC specs are: Processor: Intel(R) corei7 3.50ghz Ram ...
1
vote
1answer
148 views

Benchmarks for choosing the right CPU

Is there any reliable benchmark resource (website?) for choosing the right CPU for Blender? I found http://blenchmark.com/cpu-benchmarks, but they seem not reliable. For example, according to them, ...
0
votes
1answer
678 views

Help me understand why my cycles render is so slow

This is NOT about asking how to speed up cycles renders. I am just confused to why a scene has taken so long to render. Here we go: I have a camera (WOW) looking up into treetops. Pretty simple. ...
1
vote
0answers
65 views

Blender file size increses drastically after joning duplicated object and performs very slow

When i join (CtrlJ) duplicated (ShiftD) multiple object or mesh then blender performs very slow and file size increases too from 100mb to 1gb. Does anyone have solutions for this issue?
0
votes
1answer
58 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 ...
2
votes
1answer
281 views

Is there a way to make Cycles render slower to use less GPU resources

Is there a way to make rendering in Cycles use less GPU resources? Like some console parameters for rendering engine or settings within Blender? I tried render scene with the console (no UI), ...
0
votes
1answer
318 views

Leverage multiple CPU cores for video rendering (VSE)

I have a 1950X Threadripper with 16 cores and even if I set the thread count to 16 manually in the performance section, it still only uses 1 core. Have Cycles renderer selected and both user ...
1
vote
2answers
283 views

Rendering using both GPU and CPU is not possible

For some reason I'm unable to render on CPU+GPU. I've checked on 2 different computers and it's not available. One setup is Threadripper + GTX 1070, and the other one Intel i9 + GTX 1080. Is it a ...
1
vote
1answer
234 views

Linux Ubuntu 18.04 - Sculpting performance (dyntopo) is terrible in comparison to Windows

OS: Ubuntu 18.04 CPU: i5-6600K GPU: GTX 970 RAM: 32 GB Sculpting on objects with more 100k polygons (dyntopo constant detail 50 px) lags blender, especially using Snake Hook brush and dragging ...
1
vote
0answers
689 views

Blender 2.79 Cycles OpenCL RX Vega GPU extremely slow. (Ubuntu 18.04)

I am running Ubuntu 18.04 on a fairly powerful PC (Ryzen 2700x and Vega64) I finally managed to get OpenCL to work at all with ROCm-rehl drivers. When I render the default cube scene CPU rendering ...
0
votes
0answers
31 views

Blender General Best Practices (to affect a game's performance as little as possible)

I've started modeling a few weeks ago by doing some anvils/random objects/humanoids and animations. It seems that for some of them I used too many unnecessary vertices (and perhaps modifiers) after ...
1
vote
0answers
484 views

Blender does not seem to utilize CPUs and GPUs effectively for rendering

I've just built myself a new machine because rendering times on my laptop were prohibitive. It's an i7900 10 core processor, 32GB RAM and two Quadro P4 graphics cards with 8GB memory each. The cards ...
0
votes
1answer
198 views

LOD in particle systems

I've already checked this two questions but neither solve this problem: Level of Detail of Particles System? How to access data related to individual particles? Both posts derive to use animation ...
0
votes
1answer
54 views

blender running so slow i can take a nap when clicking a menu

I have a big problem. It's been happening for a long time and it's really urgent as this is payed work. For some reason my project is running so slow I can't even click on the menus. I literally ...
1
vote
0answers
28 views

Why is my gaming desktop relatively slow at complex animation playback? [duplicate]

I’ve been working on an animation. Due to the large quantity of animated objects (plus a keyframed cloth simulaion), I noticed that when I played through the animation, it went slow. Really slow - ...
1
vote
0answers
157 views

Struggling with making an audience/public for an gladiator arena

I am a blender newbie, slowly catching up with the program and geting into 3D modeling. I've managed to create a huge arena model, and I have a lot of audience seats that should eventually be filled ...
1
vote
1answer
2k views

Blender selection in viewport suddenly slow

Since a few weeks I suffer from the issue where I have to wait up to 6 sec after selecting an object in the viewport. The time depends on the amount of hidden layers (and hence the amount of objects ...
0
votes
0answers
181 views

Viewport performance due to high poly count

Is there a way of reducing poly count only in the viewport? My gtx 1070 is struggling while sculpting terrain (It has 2000x2000 subdivisions)
1
vote
0answers
105 views

Blender 2.76b - Slow performance on Viewport Shading Material

I'm running Blender on Ubuntu 18.04 LTS; I use Blender 2.76b. My problem is when I turn the Viewport Shading to Material Mode, it is very very slow. It is even much slower (much!) than the Rendered ...
1
vote
0answers
41 views

Performance issues - make tree leaves like this?

Ok, I am trying to achieve animated, particle like leaves (low poly not realistic) like this - https://youtu.be/cKS3VM1a3TU?t=4m8s Obviously my idea was to make a group with some leaves and make a ...
0
votes
2answers
3k views

Poor performance on mac with AMD Radeon Pro 560

My mac is a macbook pro 2017, with AMD Radeon Pro 560. Seeing this question How to do GPU rendering on MacBook Pro 2016 (AMD Radeon Pro 460) I also get the Cycles render to work, but it renders at ...
0
votes
0answers
22 views

Scene ran fine, then updated windows, now playback is VERY slow

So, I was animating a scene, not too complex, and playback was fine, then I found out my windows was outdated so I clicked update and restart, it then took 5 attempts to get back into the computer as ...
1
vote
3answers
2k views

Blender is only using one tile and only on CPU

I have tried to make blender faster by using my Nvidia GeForce GPU in the user preferences window and under the render options in the properties window. But I can see in the task manager that the CPU ...
0
votes
1answer
1k views

Optimize Blender's user interface for performance

As a simply a Blender hobbyist, I can't justify the an upgrade to improve the performance of my computer. I wondered, "What could I do that I'm not already doing that could make Blender run faster?" ...
0
votes
0answers
157 views

Blender not responding when I play animation

This is my animation, just about 285 frames, 78 keyframes When I play animation, Blender is not responding And here is Blender status in Task Manager. I think it isn't so strong What's the problem? ...
0
votes
1answer
345 views

Will there be a browser version of Blender? [closed]

I heard about WebAssembly, which lets C/C++ programmers target the web, I was just wondering whether Blender has any plans to make a "web" version, that runs in the browser? At the recent Google I/O, ...
0
votes
0answers
78 views

Create floor for a top down 3d game

Dear blender community, I am a beginner in 3D animation and I am planning to make a 3D top down perspective game. I want to create the game 3D assets in blender and export it to use in an external ...
1
vote
0answers
99 views

Imported .obj has too many faces

I imported a .obj file created with osm2world, and even though the imported objects are all low poly, they have many faces. E.g. this is just a simple plane: but has this many faces: Now my ...