Blender 2.81 AMD GPU performance regression

[Esparadrapo]

Can anyone explain it to me? On 2.80 I’m doing 70 s on the BMW bench and 84 s on 2.81.

On larger/more complex scenes like Barbershop it is even worse.

[Felix_Kutt (Felix Kütt)]

See this topic:

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

Greetings! There are problems with rendering on the GPU at 2.81, it is significantly slowed down compared to 2.79 (nightly build) AMD RX 580 videocard [79] 2.79 [ nightly build] [81] 2.81 Last build Other scenes also have a big difference in different versions of the blender. Optimization under Opencl in 2.81 is planned?

[Esparadrapo]

Appreciated.