Working through both LAN and Wifi

[tobeornottobealttfan]

Hello everyone,

I use spacedesk while using conference calls to duplicate my laptop's screen  so that I can annotate better. Now my WIfi has terrible latency and so connecting through it is a terrible Idea, So, I have to use an USB cable and android's usb tethering,
But when I do so, my computer is accessing the web through my phone's internet connection which it gets through tethering (even though it is connected to the WIFI).

So what I want is this- 

 

The computer will maintain connection to my phone using the LAN (usb tethering connection)  + it will access the web through  the WIFI connection.

Can anyone help me achieve this?

Thanks in advance.

[tobeornottobealttfan]

Urmm...Any ideas?
I was really hoping to find something here