AD FS Staged Rollout Issues

Hi, 

Despite extensive googling and a support call with Microsoft I've yet to find a solution to this issue.

Azure AD joined machine - account Active Directory Synced to Azure AD.

If an account is added to AD FS Staged Rollout group to move to cloud authentication then after a few hours or an hour the computer becomes unusable until a reboot. (Teams disconnects, Outlook Disconnects, won't unlock etc)

There are 2 other users who have the same config yet not experiencing the issues.

If anyone has any ideas what the cause could be would be great to hear - many thanks