is it possible to get same hashrate on HEAVY algo like normalV7?
for example: at normalv7 one of my rigs (5xRX570 4gb) do ~5000h/s +/- (SRBminer) but on heavy i get only ~3500h/s
no. its made and called heavy for a reason. everyone will experience the same, so you are not behind.
It is expected lower hash but there are some RX580
8GB users reporting same hash....
Yeah, my rx 580 8gb works even better on heavy.