I'm staying in a dormitory so I can't access the router. Is there any other way? Also, when I was at home, I could get 99mbps even when connected via 2.4 GHz WiFi, but with the TP-Link adapter, I...

About 1.5 years ago, I bought a 150mbps Tplink wifi adapter. Since I first bought it, I haven't been able to get more than 30mbps from my 100mbps home internet. I could get 99 with a cable. I'm...