@qkhanhpro 

Hello,

For your case, please refer to the following suggestions: 

1. Change the Wi-Fi channel of the main router, taking TPLINK router as an example: https://www.tp-link.com/en/support/faq/2292/

2. Please try the public driver here: https://static.tp-link.com/2019/201911/20191129/TL-WN725Nv3.zip

 And refer this instruction to install the driver:https://www.tp-link.com/en/support/faq/920/                                                                                                                                                                                                                                                                                                                                        

If the problem still exists, please help us get the following information:  

1. How long did you have the device and when did the issue start?

2.  How often does this issue happen?  How far away from the router to the computer?                                                                                                            

3. Please check the WiFi link speed on the computer and send us a photo: https://www.tp-link.com/en/support/faq/2265/

4. Do you have a stable connection from the router on other WiFI devices?    

                                             
5. When the connection lost, was the Wi-Fi still connected but no internet / completely disconnected/got some Error message?  What is the Error?                                                                                                                                                                                                                                                                                    
6. How can you recover the connection, if you reboot the computer or re-plug the adapter, are you able to get the Internet? 

7. What is the model number of your Wi-Fi router? 

8. Please send us a photo of  the driver version and computer system information by referring to this FAQ: https://www.tp-link.com/en/support/faq/2722/

Thank you for your precious time.
Wish you a nice day.