Brave kubuntu freezing

Description of the issue:
Brave randomly freezes on Kubuntu since 1.78 update

Freezes for approx. 20 - 200 seconds, does not depend on the opened site, happens even on the new tab.

During the freeze, brave process 100% CPU usage only on 1 core, other apps are normally usable (not a OS issue).

Happening since update to 1.78, last normally working version is 1.77.101.

Tried, none helped:

  • Disabling GPU acceleration
  • Disabling memory saver
  • Disabling all extension
  • Creating new profile
  • Deleting all data under ~/.config/BraveSoftware
  • Setting #ignore-gpu-blocklist to Enabled

Expected result:
Normal operation of the browser

Brave Version( check About Brave):
v1.79.118

Additional Information:
Brave Nightly - same issue
Kubuntu 24.04
KDE 5.27.12
X11