MR6110 Dropping Remote Desktop

I use a MR6110 while traveling and signal is great. I have to access a vpn before connecting to rdp session. I have used this router for over a year but August it started dropping my RDP. I have used 2 different laptops same thing. August it was dropping minutes apart and reconnects. This October same thing but not as much. I also RDP to connect to 2 different PC's (not at the same time) both RDP drop. I thought maybe it could be those PC's so tried another PC and got the same thing. I can do RDP all day long from my home wireless with no issues only this mifi is having issues. This MR6110 is brand new the one in August was just a few months old. Any ideas?  Thanks