Last update - steam, reboot, hwm

good evening everyone,
after the last update i have massive problems with manjaro.

does not work, the system hangs.

hardware configuration:
when i try to click on hardware configuration under system settings, the settings window hangs. no response anymore.

steam does not respond and websites no longer load:
when i try to save the password in steam, steam hangs as well. also, surfing no longer works.

about the system:
kde-plasma-version: 5.23.4
kde-frameworks-version: 5.88.0
qt-version: 5.15.2
kernel: 5.14.21-2-manjaro (64bit) (the new kernel-version 5.15. makes even more problems, i already tested it)
graphics platform: x11

amd ryzen 7 5800x
amd radeon rx5700 xt

does anyone have similar problems or maybe even solutions already?

thanks and best regards

5.14 is EOL. If 5.15 doesn’t work for you, try 5.10 or 5.4. Both are LTS kernels.