Black Screen on Spawn / Resolution Crash / Disconnect on Join

[Guide Dog]

The only thing that these three have in common is that (for me) they mostly occur when the steam overlay can not be brought up and the game does not load the steam overlay (as notified in the bottom right).
Screen issues such as flickering on spectate, black screen on spawning (audio and controls still available) and an inability to change the resolution without possibly crashing all occur.
I've noticed that when changing the resolution (you can still access the Esc menu from the blank screen, so no, it's not a display issue) is that sometimes the game screen will come back, except now probably in a different resolution. This is the only known workaround and it crashes most of the times anyway.
If the Steam Overlay does not load the frequency I encounter these issues is increased alot, I'm guaranteed to spawn with a black-screen.
My Steam Token is being taken, my signatures are being accepted by the authentication servers.
Occasionally when the resolution is changed the screen pauses and the game is still available (audio, controls). Yes, I have done everything possible to diagnose a possible cause on my end, including following the recommended advice.

From the diagnostics and fiddling I've done this isn't an issue with my display, my graphics card, my cpu or my settings. The console displays no errors that indicate an actual failure to connect with Steam. I am confident that repeatedly loading the game via steam until the overlay can be opened will solve most of the secondary issues for users as a work-around.

It does seem that Steam is having trouble detecting / verifying the game or user IDs.

[Guide Dog]

Strange.
I note that starting the game in the lowest resolution seemed to eliminate the screen issue.
Then I increased it to 800p, now the screen is the textured blank background.
I continued bumping it up to my native resolution, at which point the Exe crashed.

I'll also note that when I get disconnected after joining a server the game seems to do this before it can validate and generate my signature. -///In one such case I decided to try the Simply Menu and before the signature stuff but the moment///- it loaded 'Asset: Simple Menu' the game then disconnected.

Central authority won't validate players in some instances? -///Simply menu introduced problems?///-

Hope this helps.
-///*this is normal behaviour when the game kicks you back into the menu, but it often crashes instead.///-

[Guide Dog]

Note:
This is the first time I've ever been kicked between playing in a round and a new round starting.
The console did display: Badge Signature Mismatch (or something similiar).
But this is AFTER playing the end of a round properly.

I could not rejoin the server because the player count exceeded the total player count by one. (Ex. 4/3)

[Guide Dog]

This is a new error that occured that I have not seen previously in the Console:
https://ibb.co/bw8RoJ
I noticed 'Get My View' as well. Should I redownload the entire game? I've already tried verifying the game files and that produced no results.