Sure, stop using wifi for tasks like that.
Use a hardwired Ethernet instead.
It will make no difference. You don't even need shielded cable for residential, in most cases.
Run an Ethernet cable along the walls between the router and your PC.
Either along the floor, or along the ceiling.
Here is a 20 meter one for under 10€
https://www.amazon.co.uk/dp/B018M7F3MW/
Sure, stop using wifi for tasks like that.
Use a hardwired Ethernet instead.