I'm having a problem with huge traction loss after "Resume" is used.

[Ericmopar]

I've been having a really bad problem with huge traction loss after I use the "Resume" function after saving a scenario.
So far I know it's affecting the RW&A and my Castle Rock project.
Everything is fine until I save and resume a scenario.
To put this in perspective, two GP9s with 5 boxcars and a caboose, on level ground, start slipping badly by notch 2, in clear weather.

I've never noticed this before now.