That’s funny! If someone was trying to infect my PC via e-mail, I would expect them to be sending pdf files.

Also check out ELKS for your even older CPUs.

Try this setting: Display Configuration > Screen tearing: Allow in fullscreen windows. Whatever it’s set to, try the other setting. I had a similar issue once and this fixed it. The issue came back a long time later and switching it again fixed it. 🤷‍♂️

It’s a difficult issue to pin down. I’ve also read about video stuttering while trying to stay synched to pipewire audio which is having buffer underruns, even if your audio sounds fine. To check the audio buffer, you install and run pw-top and then watch it while you are having the video problem.

I have several Android devices that work without signing into any account. I get my apps from F-Droid and some apks extracted from my phone that does have a Google account.

Samsungs are annoying, with their regular nagging, begging you to also make a Samsung account. I would never buy one but I’m on-call with a work-owned Samsung and there’s one notification that can’t be disabled. It goes off every once in a while and makes me think I have a service call.

Windows, eh, I switched to Linux long ago, but there’s always alphabet soup edition (IoT LTSC) that is far less bloated.