Thanks steuben, but I see this ~30s with something with 5 parts. It improves slightly if I quit and reload but soon reverts. I wondered if any settings I may have altered would affect it. Otherwise the game runs fine, but with this delay, and the necessity to warp-to-dawn half the time it makes popping back and forth to tweak, say, reluctant de-couplersa bit more tedious than I'd like.