There's plenty on this subject. Did you complete the work at https://www.tp-link.com/us/faq-1077.html
That's first. Sometimes I skip all that and just get the latest drivers for the stick.
I have a 60mbps internet service from xfinity, and everything was fine at first. I was always getting about 70mbps on my pc, laptop, and phone. Recently, my pc slowed down to about 1mbps second while using the 802.11ac band and 11 when using the 802.11n band. However, sitting at the exact same spot I still get 60-70mbps on my laptop using the 802.11ac band. I have an xfinity XB3 router and using a TP-Link AC1300 dual band adapter. I have read that the xb3 is a pos, should I consider getting a different one? If so, any suggestions?