I bought the Archer TX20UH about a year ago as a supposed upgrade from an earlier TP-Link USB adapter I had before (the model I do not remember). The TX20UH has better specs in every category, as well as cost me about twice as much. Yet ever since I bought it it has been consistently worse. The download speeds are way higher, that is for sure, but when gaming online the connection is everything but stable. I myself can never find the motivation to get into the specifics and try to understand what the issue is, so I'm now finally writing here for some help. 

Does it have to do with compatibility with my setup? My WiFi router? A couple quick google searches tell me it could, but none tell me how to know - if it was such a big deal the information sure is hard to find. 

I truly don't want to believe this product is just worse than earlier generations, and I'm sure it's got something to do with my side of things - but I just don't have the capability to figure out what is wrong. 

Thank you in advance for your help. Feel free to ask about specifics regarding my issues, setup and/or router.