Running Linux Mint 20 with Cinnamon with Dual monitors

Running Linux Mint 20 with Cinnamon with Dual monitors. With a single user everything works great. When I try to do a switch user (so my wife can log on and do something) Cinnamon crashes and it logs on in fallback mode . I have found some references to this issue elsewhere and they all claim its a video driver issue so I thought I would check here if this is a known issue or anyone knew how to debug it…Thanks