Mth DCS

sounds like a signal strength problem. Have you tried any test of the strength? Do you have some extra equipment like passenger cars or TMCC engines on the track? Does this happen all around the layout? Is this with any engine?

 Have you tried the system on just a short test track?

I had this happen the other day because of just one engine was not responding in the consist. The remote struggled like you're describing.

If it were me, I'd try putting new batteries in the remote. Make sure your track, pickup rollers and wheels are clean....

Gilly

Are all engines doing it?  If only one be sure the connection from the tender to the engine is tight.

Other ideas:

How is your track wired.  Is each feed on it's own block/isolated section.  If all of your track is electrically connected, not just by the TIU?  

Some LED passenger cars, cabooses, and Legacy engines will mess with the DCS signal.  Remove everything from the track except the engine.

How big is your layout?

What rev level is your TIU?

Was it ever working correctly?

More information about your setup would help us help you.

Dan

How many lighted passenger cars? Maybe you have too much draw to use your 100 watt tranny. Dave G.

Have you upgraded to DCS 4.3?  While I have some insignificant issues, the basic item to me is that it reduces the amount of time between commands (latiency) so that the remote is more responsive.

You might have lock ons present that you do not need.  In the early days I found 1 or 2 per 100 feet of track.  That is before the Rev L TIU.  Any more than that will cause what you are seeing.  If you are running an Atlas caboose, that will be part of your problem.