When I connected to the “fastest server” this morning, it appeared at first to connect me to a US server in Chicago. Then I visited a sports site and got the European version. Odd. So I went to check browserleaks, and lo and behold, for some reason or another I was in Czechia (is it still called the Czech Republic?). Anyway, I tried a few others in that range and they all go there. Also, I’ve mentioned in a couple places before, but various US-TX servers also act like they’re in Europe, even though they do initially appear to be in the US, because even though browserleaks shows the Texas ones as a US IP, the network shows some European company so some sites treat them like Europe.
That said, they still mess with the versions of sites I get. If I choose a US server, I want to know I’m going to get the US version of a site.
Which is not necessarily something that Proton (or any other VPN provider) can impact.