Yes, it is faster than xmr-stak-amd by 50-70 H/s for a single card (1925-1950 H/s) but I start a second copy, the performance of the first one drops by 200 H/s to 1750 H/s. Do you see this?
hm, is "AMD CrossFire" turned off?
I am testing with a Vega 56 and 64 in parallel, sorry, can't reproduce. Both keep there hash rates and don't mind if its neighbour is started or stopped.