I'm dual mining ETH and SC on 2x RX480, for me 9.2 is a big improvement. With 9.1 I had to use -asm 0, because of huge hashrate fluctuations. With 9.2 I can use the ASM kernel and get better hashrates for both coins. However for the hashrates to be stable I had to use dcri 22 instead of 26 (not complaining, just writing it in case it helps someone else).