As title states, enabling hardware anti-aliasing freezes game visuals. Audio indicates it's merely a visual bug, can still hear reactions from movement, environment, etc. This happened after taking steps to fix the server browser overlay in game, which I previously reported. Visuals go from frozen to not in the menu itself, instantly upon the enabling/disabling of the hardware anti-aliasing option.
You spawn with a black screen (but can still hear reactions of movement/environment) if previous settings had hardware anti-aliasing enabled, I went into the menu and flipped through the settings to discover that it was the HAA option causing the issue, and when flicked back and forth now not a black screen, but frozen visuals of what player sees.
Basically this means I could still play as long as I leave HAA disabled.
I have a hunch this could be fixed ONLY ONCE by verifying game files and launching through the Exp launcher. But upon a logout or server reset/crash you'd have to keep re-verifying the game files in steam properties.
AMD RX480