Is GPU rendering persistently grainy for anyone else? It's great for its speed and handling of glossy materials, but my characters' skin always seems to look slightly grainy even with 60-squared samples. CPU rendering gives me smoother results, but of course, it's much slower and doesn't handle glossy stuff quite as well. Any tips will be greatly appreciated. Is this just a hardware or software limitation, or am I doing something wrong?

I use no longer the GPU rendering because the quality is much lower than with CPU rendering. One of the main reasons is that GPU rendering doesn't use branch path tracing, wich makes the rendering process more accurate. I think you can compair it with the difference between a snipergun and a machine gun in firing rays through the scene. I can give some advice on faster CPU-rendering later.

Hi there

Here are my settings for GPU rendering

Grainy renders,this depends on more factors,how many lights are you using and what materials are you using

I would try have look on those settings,but I found,on some earlier GPU like GTX780 you can use 256 bucket size and on newer like is GTX970 and others you should try to use 128(192 bucket size I've used as biggest without penalty on speed and quality),usually all my renders are up to 50 samples,some interior needs to baked up to 70 samples

Hope this helps

Thanks,Jura

You can turn on Branched Path Tracing and try how it works, it's not disabled or anything. You should however keep the individual sample settings to 1 (all the ones on the left side), to prevent the GPU process from getting a time out. If the scene and shaders are too complex however, even low settings cannot prevent the OS from interrupting the GPU render process, and that's why the UI recommends to not use GPU and branched path tracing together.

I've tried branched path tracing with GPU rendering, but it slows down my computer is such a way that CPU rendering is faster