Thunderbird & Firefox freezes & fritzes out randomly

I had to forcefully quit both Firefox and Thunderbird (snaps) when the app freezes, then starts to “fritz”.

Anyone else experience that?

System info:

Operating System: Kubuntu 21.10
KDE Plasma Version: 5.24.3
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.13.0-35-generic (64-bit)
Graphics Platform: X11
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 62.7 GiB of RAM
Graphics Processor: AMD Radeon RX 6900 XT

Have you tried enabling refresh app awareness?

It’s already enabled

Here’s a video example of Twitch glitching randomly:

Seems to happen when it’s been up for a while.