Changing Datacenter location for better ping

 
On my VPS I have around 120 ms but when I click on the objecg in the bottom right corner to see my ping, there is usually an option for 100 ms. I click on it and it changes, but then I check later and it has automatically switched back to the default.

This vps the ping is no problem, but I have another where the default one it connects to is 20ms usually but there is an option that is usually less than 15ms and I would rather be connected to the one that has the lowest ping because it is more important for the EA running on that vps.

Is it possible to stay connected to 'that one with 100 ms or 14 ms"?
Reason: