When launching the game, shortly after joining a match, I get a complete freeze that lasts 2-5 seconds. This only happens once per session. Afterwards, I have zero performance issues.

Upon first install, the game works normally. But any subsequent start results in a complete black screen. The only way I have found to fix this is to completely uninstall and reinstall the game (Verifying game files does not work). Technically, this is a "fix", but for a ~20GB game, it's not a practical fix.

As mentioned, a single freeze of 2-5 seconds which only occurs once per session upon loading into a first match.