First thing I tried was raising the Samples per Pixel per Frame but that always jumped to 1.
So I found out that this value is over-ridden by the value of Machinima / Movie Capture / Samples per Pixel per iteration ( usefull for multi-GPU ). I know from render farm experience, that this can be raised very high like even to 1000 and on multi-gpu workstation rendering times are much faster… But changing this default 1 to 3 also made my single A6000 to render faster! from 7 sex to 6 sec :)
