USB Speed Question

I have a 1Gbps line (but real-world in my home get about 500mbps average)

With my Rpi4 I get 80Mbps when on VPN - with the usb adapter what am I looking at?

I.e will the processor on Pi 4 when running VPN cap it slower than the max speed of the USB adapter?

So the 80mbps on your Pi 4 isn’t a limitation of the CPU (it’s purely the internal wireless)

With the USB WiFi Adapter and cabled WAN connection to router you can get up to ~600Mbps for the max speed over WiFi (if you get speeds of 500mbps normally then could likely be 400-450mbps max with VPN)

VPN speeds as always are slower than unencrypted, but WireGuard especially runs fast on Pi