Thanks for the info! I honestly would not mind taking a look at the code. Get back to me if you want, but for now I will be scouring Game maker forums for a solution lol
I found the old demo i used as a base for my code last time, here's a link if you wanna check it out.
I think my problem was that it didn't work with the depth system I was using but there should be ways to work around it
https://github.com/SilverLollipop/SeamlessRoomWrapDemo