pretty much any type of notification will cause this to happen: messages, the initial launch popup, achievements, etc
#Steam popups cause the CRT filter to bug out
stoic pine
additionally, moving the crt filter from 0 to 100 quickly will cause it to appear without shading entirely, like so:
you can get some funky patterns doing this:
final nexus
Im probably just dumb but this just looks like normal CRT no?
stoic pine
it's the corner shading specifically, the rest of it is fine