I recently built a new PC for a friend and he wanted my ROG STRIX 1080 A8G and I had a chance to snag this MSI GTX 1080 Ti Gaming X for what he was paying me to put together and build / overclocked his new PC for him, so naturally I jumped on it as I have wanted that extra boost the Ti gives for 2k gaming. Anyways, the card seems to be in perfect condition and performs exactly as it should as long as I do not touch the voltage slider on MSI Afterburner. On my GTX 1080 I had voltage set to +80 so it would hit 1.08v which was the sweet spot for that card's overclock. If I up the voltage at all on this card something happens after a couple minutes (usually really quick... sometimes it takes 30 mins to an hour) and even though it says it is sustaining the clocks and voltage I have set it is rendering at about half power (my FPS is cut in half). This will persist until I reset my PC and then everything is fine unless I mess with the voltage slider. It seems that everyone else overclocking this card has no problem with upping the voltage as long as the temps are fine (which they are on this card as I never go over 74C no matter what I do and am usually around 66C). So, is there something broken on this card? Could it be bad VRMs or something? I have no clue what do in order to troubleshoot this. I would love to OC this bad boy with some extra voltage but this card isn't having it. I can put a mild OC on the core and memory (2ghz core and 12ghz memory) without touching the voltage and just sliding the power/temp target to the max, although I want to get the most out of it. Problem is that even though I have the receipt and there is well over a year left on the warranty I just can't see them RMAing the card as it performs perfectly on stock settings while I don't see them replacing it just because I cannot up the voltage without issues. In their eyes the card performs as specified so why would they replace it? I have tried flashing the stock BIOS back on the card unless there was any corruption to no avail and do not know if there is another BIOS I could try without bricking the card. Has anyone come across this issue before or have any advice for me? Anything would be appreciated.