I have the latest miners.
I have tried pretty much everything but flashing to a different bios. Even reinstalling Windows (tried both 10 and 11).

I have a MSI RTX 3080 Gaming Z Trio LHR. It should be mining around 70mh/s.
Mine doesn't do more than about 62mh/s.

The settings are -500 GPU, +1000 vram, 80% power. I have also tried very different oc settings. From original to +1500 vram and +150 gpu.
However, Afterburner power slider does nothing above 60% power.
I have tried different miners, T-Rex, lolminer, NB miner, NiceHash (latest versions). They all mine at about 60mh/s and 200W+-10% power.
If I go below 60% power, it drops, but if I go higher, nothing happens. I have tried EVGA Precision and it's behaving the same way.

What the fuck is going on here?