If you are using the wireless mouse....then please do this.
go to your wireless router setup and change the broadcast frequency. the reason to change the frequency is, that both wireless mouse and wireless signals use the 2.4 GHz frequency spectrum and create the interference.
If you are not using the wireless mouse, then go to setup page and tick the option of better coverage age instead of better throughput.
I think, it will resolve your problem. INSHALLAH.