GL A1300 speed super slow when setup as server on wireguard


I recently setup a server on GL A1300 using wireguard. When my client connects to this wireguard, the speed is super slow. I am talking about speed like 23 KB/s. I am unable to use it for anything. I followed the following steps for setting it up:

I also added the port forwarding on my Xfinity router. My internet speed is 1 GB/s. I am not sure how I can make this work. I need it for travel purposes.

Please try changing MTU from 1420 lower value, say 1380.