@RuiS A paradox I think so. You won't know it before you buy it and vice versa. Although many things works like this. How about take a try. If it's not satisfying, just return, if egilible.

The normal operation temperature of a Wi-Fi Adapter is 0-40 degrees. Are there any High-Powered Appliances near your adapter? And this is a driver-required adapter, is the driver up-to-date?

Do the Google Nest Mini and the mobile device (installed Google Home) are in the same Wi-Fi network?

@clanon I found this RSSI (dBm) Performance Distance (ft) Distance (m) -30 Excellent 6 2 -50 Very good 18 6 -65 Good 40 12 -90 Poor 200 60

May I know which model of Wi-Fi Adapter you have? Do you mean Wi-Fi Router by Wi-Fi Adapter?

There is a beta firmware here. https://community.tp-link.com/en/home/forum/topic/611964