@JamesB2004 did you even try different antenna directions? did you try to run ping command and get stable 1-2ms response time? my phone also performs better in exactly same spot. ive been struggling...

@JamesB2004 its RTL8812AE you should play with antenna directions and try to eliminate as many obstacles as you can between router and adapter use ping command and find position where you get stable...

@Godzilla i have archer c6 router with 1.2.1 firmware, not latest buggy one. every time download speed reaches constant 100 mbps on 5g wifi (providers maximum) it cant last more than 5-10 minutes. 5g...

update: solved the problem by reinstalling SAME DRIVERS few days after. i was reinstalling them 10 times in a row with same 54 mbps result and now it started to work like it used to (585 mbps, ~40-60...

5g network ~2m away from router 54 mbps, -28 dBm same network from mobile 433 mbps, -37 dBm

so recently i could not connect to 5g netwrok, which worked fine for past few months. After few reboots i reinstalled the drivers (same drivers, got it on hdd) and now connection speed is always 54...