I recently switched to a Windows PC from a Surface Pro 9 to use Blender 4.3 because my Surface Pro was starting to work really slowly with Blender. but it seems like nothing changed with my PC. Here are the specs for the PC
Processor: Intel(R) Core™ i9-14900F
Ram: 32.0 GB
System type: 64-bit operating system, x64-based processor
GPU: NVIDIA GeForce RTX 4070 SUPER
A few videos I found told me to fix a few settings in the NVIDIA Control Panel for Blender specifically, but nothing changed. I messed with some of the settings inside Blender and still nothing.
I have the Cycles Render Device for Blender set to OptiX, and I have only the NVIDIA card selected and not the Intel Core.
What should I do to make Bleder run faster on my PC?
Describe what operations are running slowly.
Is it rendering? Modeling? Shading?
In current blender, the shader compilation time is a significant slowdown, even on pretty capable hardware. If that is the case, then you might want to consider downgrading to 4.1 if you can, as that predates the eevee next changeover that slowed down shader compilation so catastrophically.
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its slow in both the viewport and the render. Modeling runs OK. I downgraded to 4.1 when I first had the problem, and it still ran slow. I had a lot of plants that I was working with. I got rid of a bunch, but I couldn’t get rid of enough for Blender to work faster. I also had a rose that had a lot of vertices (maybe it was just the rose, maybe not) that maybe Blender ran slow with just the rose in the viewport. Right now I’m working on something completely different. I have a dog model, and I’m testing out the new Brushstroke tool, and its running a bit slow sometimes and then will completely freeze if I try to add more brush strokes. I might go back to 4.1 if theres nothing i can do to speed it up
here is a screen recording of an animation i just made
Note: This is definitely not a finished rig or model. Its still a WIP. This is just to show what’s going on in the viewport.
I dont understand why it sometimes runs fast and then does not if I mess with something in the viewport.
Your animated object has, as far as I can tell, millions of polygons with extremely dense topology. For the level of density your wireframe shows, 16 FPS is excellent
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Well, this may help give some ideas.
Basically, it’s not the GPU for the most part, it’s the CPU and as fast as the 14900 is, parts of Blender geometry pipeline and calculations are rather single thread limited.
So you need to go through all the objects/modifiers, work out what is and isn’t enabled to find out what has the biggest impact.
From the video, it doesn’t look like there’s a problem.
However, the weight paint set on the dog seems to be a problem.
Even if the hardware performance is the same, the performance of the Nodebook is lower than that of the desktop.
If there is a big difference from the previous work, it may be a problem with the scene settings or a delay due to the use of the modifier.