I kind of agree. When I expanded my layout, I decided to get away from short Atlas turnouts to Walthers turnouts on the main lines. This also involved changing to Tortoise machines which gave me the opportunity to power my frogs for no additional costs.
I discovered that a lot of engines performed better with live frogs, not just the short wheelbase ones.
It takes an iron man to play with a toy iron horse.
I did a little research on your problem and here is what I found in similar situations. The problem with the Kato double crossover is somewhat common. The solution is to wire all four ends of the double crossover to ensure that power is continuous throughout the crossover. I cannot say for sure that this is the solution to your problem, but it can't hurt to give it a try.
Rich
Alton Junction
Sounds like the frogs are dead (a common design) so the engines are losing power going over the diamond. You may be able to add power connections to the frogs so that they are powered. The other option - harder in N than in larger scales - would be to use engines with a decoder with some type of "keep alive" attachment that would provide power to the motor during the brief power cuts.
All of my locomotives pause and then resume when going over Kato double crossover. The Zephyr Express doesn't detect any short circuits and AnyRail 6 doesn't find any reverse loops. It only happens when the locomotives are crossing and not when they go straight through the crossover.
Any help would be greatly appreciated. Thanks.