New AMD gpu drivers are out and with so many new things I just gotta use them. So far mining speed on teamred seems to be a bit better and now one can undervolt well enough without registery powertables.. Not sure if the combination of new drivers + teamred or just teamred but whole system seems to be laggy while mining. It wasn't before

Probably need new CN-values.
Release notes
https://www.amd.com/en/support/kb/release-notes/rn-rad-win-18-12-2Download as usual.
Sapphire Pulse Vega 56 & Cryptonight V8 algo.
Did you try the different memory timing options? Did they increase your hashrate or lower your stable overclock?