Exactly what the title says.
Card was under a waterblock for 3 years, I upgraded to a 4090, put the air cooler back on the 3080 ti and tested it and everything was fine except the hotspot temp was like 100c instantly. It took about 7 repastes to get the hotspot temp down (not sure if just old TIM but I ended up using newer stuff and it seemed to fix it).
Well after a bunch of repastes the temps are finally in check but the card will now only do pcie 4.0 4x. Contacts look great and I've tried it in my windows 10 pc (z690) and a separate ubuntu rig (z590), both max the card out at 4x.
I can't see any PCB cracks or anything of the sort.
Anything else I'm missing? I find it hard to believe I broke the die in exactly one spot that only causes the card to only 4x but still runs fine otherwise.....but I guess anything is possible.