My specs shouldn't matter, I ran this game perfectly before and nothing has changed besides me getting a new monitor. But, to the other 2 questions, a bad laptop, and Windows.
Number1S0n just tested Symbolic link and it works. https://callofdutyrepo.com/2020/06/13/move-mods-folder/. Instead of c:/users/xxxx/AppData/Local/Activision/CoDWaW/mods just do it for c:/users/xxxx/AppData/Local/Plutonium/storage/t4/mods.
Currently kinda pointless rn since it seems custom maps can't be played online. Unless I'm doing something wrong.