I’m glad that it has fixed your problem. Enjoy :)

Use virt-manager (with KVM). Learn how to install guest tools, then enjoy the performance!

Activate it as shown in the comments!

Have you checked the flags in wpa_supplicant? Some routers have non-default encryption schemes.

From my notes, use these USE flags as a test: net-wireless/wpa_supplicant wps wep ap fasteap eap-sim tkip uncommon-eap-types

I’m pretty sure this is your problem :)