I have an issue with my 6 card ref vega 56 @ 64 rig.
Everything work well for hours or day(s) long until the fan speed of 1 card drops to 7-800 rpm, then the cast-xmr stops, sometimes freezes.
I've experienced this before on a completely different rig as well.

Did anyone experience something similar?
Any ideas?

Win-10, blockchain driver, asus h270-plus mobo, PPT mod.