I tried 26012021 los18 and it seems it became more stable. However hfc mifare card bug it still here. It asks again to format sdcard. Maybe this is because I use another rom before that.
I found if sdcard is out of the tablet big games installs normally. So there is kinda writing permission problen of obb file to sd card. Maybe it's connected to why it asks often to format sdcard.
Thanks for your answer. But i don't use sdcard on mine.
I will try PixelExperience if it will release for karin_windy. I'm using on a phone and works good. Will see.