I have an i9-9900K processor and RTX 2080. When i render on GPU only i get around 1 minute per frame and on CPU and GPU together i get around 2 minutes. The first x8 tiles that the CPU starts to render take the whole 2 minutes whilst the GPU completes its share in around 30 secs
Are there some settings that i’m missing? CPU shows 100% utilisation and temps are normal
I run couple of tests. It seems hybrid rendering cannot compete with GPU rendering regardless of tile sizes. Maybe high memory demanding scenes can change the results…
I had a horrendous scene a while back where I kept adding and adding stuff with huge textures. Eventually my GPU gave up due to memory. I was pleasantly surprised by how my CPU coped on it’s own. Way too slow to do anything other than still renders though.
Since then I’ve added a second GPU. I leave both my GPUs to render only. The CPU can take a well earned break… knowing that one day it may be called on if I use foolishly huge textures on a stupid amount of objects. I don’t think hybrid rendering is worth bothering about unless your CPU and GPU plod along at the same pace with the same tile sizes… which is unlikely.