Hey everyone back again today! So I found the solution for the problem above which fixed all the events playing in the Unreal editor, but it seems that whenever a build is made for Steam, the same problem occurs that was happening in the editor.
TLDR; more than half of the events in FMOD don’t play at all (all weapons and all abilities for vehicles). The only events that play correctly are the vehicle engines themselves.
I’m thinking that the issue might be outside of FMOD, like in Perforce or maybe still UE, but I can’t be sure.