Undervolt 2080 SUPER

[ChopNorris]

Hello everyone, I´ve been trying to undervolt my 2080 Super and I´m having some trouble. I actually have it with OC at 110 on the Core and +950 on the memory with a 112% power limit. I reached 0.912 and It was stable both in unigine heaven and while playing Borderlands 3 for like an hour. The thing is that after that I tried to play COD:MW and It crashed. I leveled the Voltage and kept getting crashes, it didn´t stabilized until I reached 0.956V.

Why can it be this huge difference? The main reason why I need undervolt is because I´m in a miniITX case and I´m getting kinda high temps. 

Thanks in advance.

[ChopNorris]

Any idea? Thanks