Hi,so yesterday i bought a new tplink adapter and it  is TL-WN725N and i plugged it in for the first time downloaded the driver and i tested the speed it was 0.1mb/s and thats bad and my ping in multiple games is so bad it keeps disconnecting So i tried download the driver from the CD and it was even worse i tried changing port and still the same issue tried it on both internets of mine they are both insanley fast tho its still very bad i read some articles on reddit and tp-link community and the issue didnt solve i honesty regret buying the adapter
TP-LINK,work on ur self a bit