Thank you so much.
These are the best timings for my Asus RX 580 Dual OC.
Now I get 1000 H/s in cryptonightV7 & more in heavy  

Edit:
GPU 1250 - Memory 2120 MHz (Stable for now, at 2130 I get artifacts on screen)
"intensity" : 122, "worksize" : 8, "threads" : 2