Have noticed an issue coming westbound out of New York Penn where if you have ATC/ACSES on you're limited to 20mph all the way through the tunnel, making it impossible to keep to time. Not sure if I'm causing this somehow or it's a known bug?
This bug is known since the first release on PC.. Please open a ticket on http://dovetailgames.kayako.com/ about this, the more reports, the more hope for a fix...