@Lolliedieb
Hi, after about 12 hours of using version 1.12 I have 0 hw errors, so I can confirm that in my case this issue is solved. Thank you very much.

Today after a while that the epoch has changed, hashrate has dropped to 1.2Mh. Manually restarting the miner without 4GB related parameters, the hashrate returned to normal, but after a while it dropped again. I will try to play with 4GB params hoping to solve.