Yes I can confirm this bug is back with the PRC servers too. Changed no server settings apart from updating them to the latest version.
Can confirm - held a Formula Ultimate race around Spielberg with 22 cars last night and it was really unraceable - would appreciate any help we can get as right now it's killing us off...
They are working on it! I know it for sure! ...in the meantime you can test this with me? Can you set this specific Multiplayer.ini line of text on the Dedicated Server like this: Max Data Per Client="128" ? Last time we set it as "64" and problem was fixed, now is time to raise it to "128" lol
Same here, we had two races at IVRC on April 28th (so directly one day after the 1.5.1 patch) and while our first race was fine, the 2nd one was really laggy and stuff. Thought first that it's the server, but seems like it's AMS related. Can't post a trace or anything though.