The Dead Space Map bug has been fixed and caching update
Valve has released a proton hotfix today that fixes the hard crash in Dead Space when viewing the map.
Originally Tweeted by one of the Valve coders earlier today
The hotfix should download automatically but check your downloads area if you want to force it to download.
As you can see here. We can now view the map in Dead Space. Whereas before it would crash the game before the map view loaded.
In addition to the hotfix, there has also been Shader pre-caching update which has massively reduced the stutter we were seeing in-game even on balanced FSR 2.0 settings