Installed Manjaro w/USB WiFi. AX210 Thermal problem (dmesg). Fix from FS#73387 : [linux-firmware] Intel AX210 iwlwifi broken on kernel and firmware upgrade
TL;DR
As root
mv iwlwifi-ty-a0-gf-a0-66.ucode /root
mv iwlwifi-ty-a0-gf-a0-67.ucode /root
then reboot.