Im running MSOS (ubuntu 16.04, 4.15.0 kernel, 17.5 amd driver) and ever since the ETH upgrade I have had 10 times the amount of stale and invalid shares at the pool. I tried everything including dialing back the OC/UV settings and nothing could get my previous stability back. No mater what I tried it was always 5% stales and 1% invalid shares (normal was 0.5% or less stales and a random invalid every so often). I switched to claymore and while its running at a slower hash Im getting a way higher overall usable hashrate and little to no stales/ invalid. this is only at the pool side the miner side shows way less stales and invalids than what the pool shows. Im thinking this is a linux only issue as my windows rig running 4.1c is fine no unusual stales or invalids, and the linux/MSOS rig running claymore is fine but phoenix on linux/MSOS is just trash on stability now.... If you got any tricks to fix it let me know if not maybe its something you guys can look into on the next release?
thanks for any help