Not able to help but am having the same issue! Only difference is I use the Xbox app. We've also tried uninstalling the Gaming Services through Powercell, Uninstalling ALL Xboxs apps and signing out first, gone thought and manually deleted all files from the game. Between a friend of mine, my husband and I we have looked at just about every tip and trick out there. Single player loads fine and Grounded is the only multiplayer game that crashes like this on me. I've been at it for about 11 days now, and we're all frustrated. I have also checked all my drivers and updated EVERYTHING on my computer that I could. As well as we even tried installing to a different location. Following in hopes of getting somewhere with you!
