Managed to fix this on my own. Turns out that this was an issue with Lenny's Mod Loader, despite having updated to the newest patch version which supposedly corrected this same issue that some were having. This could be an issue with Menyoo being used alongside LML, but this is unconfirmed so far. I do use Menyoo.
Glad I was able to connect the dots, and I hope this helps @MostlyPalone and others.
For reference, removing the following files/directories and their subdirectories from your GTA V root directory should resolve this issue: