Let's see a video. Something sounds odd with this situation. How long are you waiting before switching direction? It almost sounds like the rear loco is running down the rest of its momentum. Usually the following locos will short their settings to run well with the leader. I'd be interested to see if the behavior is same if you switch which loco is the leader.
DPU works very well on Railpro, I run DPUs all the time. Let's see if we can figure out what the issue is.
Kevin
Kevin, I agree. They run great as a DPU (except for the previously mentioned problem). I ran a 32 car train around my entire layout with no problems. Lots of curves on a 2% grade. Constant checking showed the lead loco pulling about 2/3 of the cars and the rear loco pushing the rest. On DCC I run the pusher on a separate throttle and continuously have to adjust the speed to prevent too much tension or too much pressure by the pusher. With RP I can now consist on one throttle, then stand back and watch! Set it and forget it. Amazing!
The best part is watching it crest the summit. This can be tricky with multiple DCC throttles. To condense a long winded explanation: As your long (uphill) train crests the summit, the bulk of the load shifts to the pusher (still going uphill) causing it to slow down while the lead loco starts speeding up because it's now going down hill and has much less load. On DCC this requires good throttle coordination until the whole train is heading downhill. RailPro handles this beautifully. I have noticed some "surging" on downhill trains. The longer the train, the more apparent it becomes. I'll start a separate thread on this if needed. Sometimes it has to do with poor rolling cars, not the locos, so more testing is required on my part.
Best Regards
Chris