@franksin
We will do some troubleshooting first and find whether we can fix it.
What is the hardware version of the TL-WN8200ND? Here is the instruction:https://www.tp-link.com/support/faq/46/
How often does it happen? How do you make it back to work?
What about the wireless signal strength? How far away does it from the main router?
What about other wireless devices? Do they have the same issue?
Try to customize the wireless settings of the main router, like the wireless channel and channel width. For 2.4GHz, use channel 1, 6 or 11, channel width as 20MHz; for 5GHz, use channel 36, 40 or 44, channel width as 40MHz.
Try to reinstall the driver from the official website.
Besides, may I know when did you buy this network adapter?
Thanks a lot and have a great day.