I think I figured out how to deal with this. First, the error code is related to a Microsoft memory exception, so there’s some issue being encountered with trying to load & save locally. However, you can still upload/save to the cloud. So, if this happens while playing RTTS do this...
Upload to the cloud Restart your game (Go Home, Quit, then Restart) Download your save from the cloud Save locally Play as usual until it inevitably occurs again Rinse and repeat
I
IrishGunGuy45_XBL
@IrishGunGuy45_XBL