HeapPadder This mod is designed to force Mono to keep significantly more free space in the heap, which can significantly reduce the frequency at which the heap fills up and the Mono garbage collection causes a stutter,  Installation Copy the HeapPadder folder from the zip file into the GameData folder of your KSP installation. Regarding the padheap.cfg file: If the default settings aren't working well for you, try the following steps: Increase the padheap size i