Hi,
In order to narrow down the issue, would you please help collect the information below?
Is everyone affected or only some users?
Does this issue happen to all clients or just one client?
Any clues in the event viewer?
I would recommend you enable the following audit policy for more information.

Best Regards,
Fan
Please remember to mark the replies as an answers if they help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com