How do i disable the "UNDO"function in SPH&VAB?it may lagged my game!

[Escuela]

When loaded a 1000+parts ship in SPH my game doesn't lag ship but after adding some parts on it my game began to lag 1 sec every 2-3 sec. It seemed that releasing memories caused the lag and the game will crash sometimes. Is that the "Undo" recorded too many things and it used lots of memory? What shall i do to fix that? many thanks!

[sal_vager]

Hi @Escuela, this has nothing to do with undo, which cannot be disabled anyway.

There is no fix for this issue, please way for KSP 1.1