Can anyone get online working for MK11 on steam deck? Constant desynchs.

I just re-downloaded the game on my Steam deck after like 2 years, it's a huge download over 100gb, and I can't play online. I tried like 5 different protons - the newest GE, hot fix, experimental, 9.5, 7.16... All the things Google recommends, and every online match still desynchs, I'm pissed.