I lowered it to 540 freq and around .65 core voltage, went well for 2 days. Then the same thing resurfaced.
Multiple errors, but now the hashrate goes even lower ex. 1.5.
It might have been something with the assembly of the ML by the distributor as the large heatsink with fan came loose (heat?) and I had the put it back.
It was already average assembled from start (fan and heatsink were pretty much off target by 0.5cm

)
I can't even let it run for 30 minutes now on low freq and voltage or the glue/paste starts to go soft and as I ran the thing horizontal the fan and heatsink would just fall down.
I'm not much of a hardware guy so I'm trying to explain the things as I see them

Thank you!
How long was it running with a detached heatsink? That should have completely fried it and probably the reason its not working how it should. These heatsinks are impossible to pull off as long as they are attached correctly (15 lbs force for 15 seconds). Sounds like the distributor you got them from didn't attached this one correct. Where did you buy it from?