I know this isn’t related to the game itself, but please hear me out.
I play Garry’s Mod and load Black Mesa maps into the game. I have bought Black Mesa on Steam and copied all the files over (effectively mounted it) in Gmod. I loaded the Surface Tension map and everything was fine, the harriers went across the screen, except the waterfall and stream in the distance wasn’t animated, which spoiled the mood entirely. How do I fix this bug? I have good Hammer skills, but my computer lags heavily as soon as I open the map when decompiled.