Sapphire rx 6900 xt Nitro+ se overclock help please

[BoreqVM]

Hello,

I Sapphire rx 6900 xt Nitro+ se with asus rog strix 6800 xt watercooled.

I used to get around 63,4Mh
all of a sudden 6900xt started to fail (2days, before perfect runs). When I lower overclock for 6900xt both cards go down to ~60Mh and stable. When I increase OC for 6900 xt a little, both cards push to 63,4 but 6900xt starts to fail.

any suggestions on improving Mh and reducing power plz?

Thanks in advance

[psy2005]

teamblackminer v.1.27

[BoreqVM]

This was really helpful thanx, hope gpu doesnt fail over time with these settings like it does with many others.

Cant seem to find teamblackminer on miners list tho. Besides, doesnt tbm find TOO MUCH stale shares compared to other miners?