hey!!
i'm really sorry you experienced this :(
it sounds like there's some graphical errors happening - the image that looks like a signal test from a TV you mentioned isn't part of the game, but it sounds like that's happening around the time an ending video is supposed to play (which would also give the route a more satisfying ending, since you're missing out on the ending if you can't see the vid) :(
this is my first game so i'm not really an experienced dev, so the game probably runs a lot more heavy than it should since i haven't optimized it in a way a more senior person would!
i'm making a new update for it once i have the energy to hopefully trim down the file size, optimize it a little more, and add in some features/cosmetic tweaks based on other people's suggestions
if you wanna come back when i've uploaded a new version, i'd love for you to try it again! otherwise i would maybe suggest closing out the game and reopening it?
i'm really sorry again :(