FPS drops with 100+ parts

[Forty21112]

I mainly use BD Armory, and I'm having a major head scratch moment because of the part limitations.

At 75 parts, KSP runs at a playable 35 FPS.

At 100, 20 FPS

AT 150, a well nigh impossible to play 4 FPS.

Are the mods installed to blame or the generally un-optimized state of the game?

I have AMD Phenom II X6 1055T with GTX 750 Ti as the GPU.

[cantab]

I have a very similar system - overclocked Phenom II X3 710, GTX 750 Ti, 4 GB of RAM. While I do get lag especially with KSP releases since 1.0 it's nowhere near that bad. To drive things down to 4 fps it takes the 600-part CPU torture rocket.

Mods can certainly ruin the framerate - and it can even change with new versions of the same mod.

Game settings can also matter, try cranking everything to the minimum and make sure you disable V-Sync.

If you're trying to play at 4K or similar resolution on a 750 Ti that could be your problem.