OpenVPN Radius Client disconnects every hour

[MMTadmin]

I have OpenVPN configured with RADIUS to my AD. It appears that my clients are disconnecting everyhour and have to re-enter passwords. Nothing real exciting in the OpenVPN logs, just shows the user has "authenticated" every hour and on the user side they have to reenter their password. Anyway to keep this from happening? I have looked at the RADIUS settings on my AD but don't see anything that would make this happen. Not really a problem more of an annoyance on the user side.

pfSense Ver. 2.4.4 rel P3

[bchan]

This might be helpful.
https://forum.netgate.com/topic/150225/user-xxx-could-not-authenticate-every-1-hour