This question is about a brand new Acer Aspire 3 running windows 11 Pro.
Wifi speed (speedtest.net) consistently top at 25 to 30 Mbit download (up 35 to 40), regardless of distance from router (Asus AX55 wifi6 router). The Acer is connected to 5 GHz wifi5/ac. The fiber from ISP is 250 mbit and I get 250 to 300 mbit when I connect the Acer via TP cable. Android phone reach 250 Mbit connected via wifi6 and another android connected via wifi5 reach 100 to 225 mbit, all from the same locations as the acer.
Tried so far: Uninstalling/reinstalling the Acer MediaTek 802.11AC MT7663 Wireless LAN Card. Downloading and installing the NC driver directly from Acer. Connected via cyberghost VPN instead of ISP. Disabled the Asus router AI protection (sends data via Trend Microsystems). Nothing made any difference to the measured download speed over wifi.
Noticed: Before I discovered the slow download speed I suddenly lost wifi connection, and got the yellow exclamation mark on the wificard in device manager, restart of computer did not change anything. Thats when I removed the NC and restarted the computer so that it reinstalled automatically. After that I never saw the yellow exclamation mark and wifi worked fine except for the speed. Since then I tried installing new NC driver according to above. Note that the low speed may well have been an issue before the NC started acting up, it was only after this I started testing the speed..
I did not install any new programs or made any alterations that I could link to the issue.
I have no clue how to continue investigating, and would be very grateful for advice on how to proceed!