Unfortunately I have to report that after updating to version 169, the issue is back. :/
Hey, sorry for the delay!
I’m happy to report that after updating to version 166, the issue almost disappeared! Image posts flicker no more!
Only flickering I’m experiencing is with community/user icons, and this does affect all views. But that’s such a small bug that I wouldn’t consider it as high priority…
(Image posts flickering itself was in my opinion a huge deal, especially for people suffering from epilepsy etc.)
I’m hosting mine on an old i5-750 (yeah, not 7500…), with an GeForce gt640 and 4GB of ram… Never encountered any problems whatsoever.
I would take a hot take and say, any old pc that you can find will do just fine.