When I loaded the last update of experimental only US Central 0-1 and 0-2 show with pings over 1700 up to 4000. The stable servers show between 250 and 500.
After loading the stable version of the game all servers should normal ping and I can now see many experimental servers. The experimental servers all have normal ping ranges.
Reload experimental branch and the same very high pings show and only 2 US Central experimental servers with up to 4000 ping.