I have issues with my Archer T2U AC600 V3 adapter. My Pc loses 8% of packets. It worked properly for around 5 days. What can i do?

With my tp link adapter:
min pin: 43 ms
max pin: 2977 ms
average: 211 ms

packets lost: 8%

with my android phone next to my PC and same network:
min pin: 55 ms
max pin: 796 ms

average: 117 ms
packets lost: 0%

I don´t know what to do. I have restarted my PC, my router, downloaded the last driver... nothing seems to work. Thanks!