Very slow GPU rendering in Cycles (opencl). Blender 2.81

[Grzesiek]

GPU wise, 128x128 based on earlier testing, link below.

raised a ticket but again wasn’t an actual bug

Investigation - GPU Tile Performance drop - Test and post your BMW 2 results

Thanks to another thread for asking about GPU+CPU combo render, it forced me to do some testing if I can repeat the issue where our memeber didn’t see the performance improvements when mixing CPU+GPU. Seems there is a GPU Tile Performance drop. Expected that GPU tile settings no longer make a difference in performance, but it seems there is a regression at least for OpenCL in 2.8? Can anyone else test and post their results of just GPU tests for various Tile settings? So if you can BMW 2.0 (…