Hi I'm looking for a way to get the in game lobby to be HD as well as a way, to get to my other screens without alt tabbing.

My screen resolution on screen keeps changing from the game lobby to the game and back again to the end game screen.

I've seen some streamers have a windowed mode that goes full screen when game is launched and then back to windowed. Is this still possible?

I am not a tech guy...
If I understand you right, use these settings (in a game room):
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I will try that. That looks like the stuff I would need. Appreciate the help.