To answer such a question you would need to give more details about your computer specs and the mods you have installed, and if you are using OpenGL to launch your modded KSP. At least on my desktop system, which I built myself with top notch pc hardware, KSP is working fine with a hole bunch of the most popular mods and tools and I am using OPM with all texture packs imaginable. My KSP never goes over 3GB of memory ram and it is very stable. I rarely have any CTD and do not have memory leaks except for the known bug in KSP v1.02 related with memory leaks during atmosphere entry heat. So I can assure you it is not this mod.
