[László Nagy]

I guess you've never played on sub 50ms servers or even 10ms to know the huge difference this is compared to atrocious teleporting/warping 200ms+. LFS used to be way more tolerant to lags since the update rate was high and cars were simulated all of them including opponent cars but in AC they are not and it's only position based as such cars slide and warp around even 100ms cars do and you can see that easily when you're around 25ms on the server. Yes connection quality/stability matters as well and latency spikes are undesirable for any average latency no doubt about that.

EU - EU <50ms
EU - NA 100-300ms (east coast - west coast) East coast US is as far as you would wanna be to drive on EU servers, and Russia when going east instead.
EU - SA 250-350ms+
EU - SEA 300ms+
EU - AU 350ms+
Easy to test online.

Yes geo location lock sucks I hate it too but for gaming having a latency lock is a must especially for competitive racing, if it was a cruise sure I don't mind. In leagues 100ms+ you get booted out no questions asked. If a driver of your team has high latency or unstable connection you get asked to pit immediately or within 1 lap at most to swap drivers and resolve the issue otherwise black flag and game over for the whole team. Of course in AC where leagues are kind of dead thanks to no driver swapping people are not used to these proper racing rules and commonly choose to connect to servers that are not suitable for them :/

There is a reason the location on AC servers and in SRS is shown so that you can see how good or bad your connection is to the server and connect to those that are good for you not to those where you will be warping around.

Wouldn't be such a problem to launch 1 server in Europe and 1 in Americas so that everyone is happy instead of forcing all servers to one geo location only.

The game be it AC or shooter FPS games changes a lot when played on and with opponents of similar sub 50ms or even sub 25ms latency and when playing against lagging teleporting 250ms+ opponents.
AC public servers that are well set do already kick 200ms+.

Why do you want to save the world ?
In my nearly 150 races I saw this warping only a couple of time...And this was with europeans too because warping caused by unstable ping , not high ping...
On the other hand I had door to door races with canadians , and with  brasilians...
I want to race with them because a lot of talented racer live over the Ocean ...
 
If you don't want to race with them then go to those public servers where are ping restiction