So, it seems to be whenever I play PUBG and Alt + Tab, "a" is repeatedly typed. I don't think it is a keyboard issue. Any fix?
Sounds like a driver issue.
Which drivers? I forced a re-update of my keyboard's firmware. GPU drivers?
More likely your keyboard's drivers. Or possibly a driver conflict. My buddy had a similar issue with his mouse drivers (cheap Chinese mouse) that would cause my friend's keyboard to think the "alt" key was constantly pressed. He switched mice and it solved the problem.
This topic has been moved from "General > Off Topic" to "Software > Games / Gaming".
It must be a game bug. Report it to the developers.
That game does have tons of bugs still, so wouldnt doubt it.