If for some reason the game starts in a tiny window. There is a fix for that, from the Main Menu, press X (button or keyboard) and then use the up/down arrow keys to change resolution and hit X again to Apply. Then hit A to save.
SMALL SCREEN ISSUE
Source: Steam Community (opens in a new tab)
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.