While I understand perfectly, using an LTS kernel might be the only thing that works. LTS stand for Long Term Support, so contains more bugfixes than others. Therefore, it might contain newer, updated drivers for the card that a normal kernel doesn’t.
I have seen many problems with this specific adapter, and while I can’t remember the exact solution, I think it was using a different kernel.
Edit:
This page on the Archwiki had this to say about the Intel Wi-Fi 6 AX200:
For models with the Intel AX200 Wi-Fi adapter, the interface can engage in power saving when running on battery which increases network latency.
To avoid this issue, you can disable power saving by following the instructions in Power management#Network interfaces
So give that a go as well, it might help.