Terrible Performance on Firmware 50

Hi, we are using 2021.3.22 f1 and our main scene with the majority of meshes is performing terribly. This seems crazy to me that Meta would release a firmware update like this that affects every developer's apps. I saw a few others have the same issue with their store apps and 2021.3. Have any of you solved this issue? I am going to try downgrading to 2020.1.14 as it seems it may be related to an Android 11 Arm64 native heap allocator thing and they recommend downgrading. That would make sense as Oculus never updated Quest to Android 11, only from 10 to 12 and apparently there are some memory issues going on since Android 11 and the way our scene loads or doesn't load seems to be related to memory issues as it loads sometimes (with bad performance) and other times it doesn't and crashes, and sometimes it loads halfway and freezes too. We are using IL2CPP and ARM64 and testing on Quest Pro.