This question I'm about to ask may sound annoying to the ear, if that's the case pls pardon me, is it possible to use VPN on mining pool just to get better speed and less rejected shares? The pool I'm using supports for example USA so if I use VPN and my location change to USA will this increase performance?
dont use vpn for mining and hoping better shares, try join on pool with biggest percentage of network & closest server, eu pool are good on ethermine
but i still chose the closest one, you wont see big diffence as stil same pool even different server, the crowded more shares are given