Okay this subject pertains to users whom are on [testing] repositories in /etc/pacman.conf
I discovered that Chromium based browser suffered the dreaded “Aw, Snap!” page crashing issues.
Especially with You Tube video
If your addicted to Chrome or Chromium based browsers recommend switching to Brave browser.
Solution: I’m now using the [brave-nightly-bin] in AUR & this fixed it.
I can now stay on testing repository
Endeavour to make your life easier