Kerbal Space Program

So recently I found out that KSP stays at 100% GPU load at KSC when I left it in the background.

I'm usually playing fullscreen with -force-opengl for reasons I currently forgot but anyways did I notice when checking my GPU graph in process explorer that it rarely did let go of the GPU so I went and investigated a bit.

After some trying I found out that exiting and entering fullscreen via alt + enter makes KSP while running in OpenGL care ONCE about being minimized and put to background, the GPU load will drop a lot then. Tabbing out after this however does NOT result in the letting go of the GPU anymore unless re-fullscreening is done again as mentioned before.

So I went and checked whenever this is a OpenGL thing and I found out it is, while running in DirectX mode (no -force-opengl supplied) it NEVER cares about being put to background.
Fullscreen, window, background, foreground, alt + enter twice or not, it NEVER lets go of the GPU and stays at 100% all the time while being at the Space Center, or where ever I am while doing anything outside of it, KSC was just an easier testing place as it burns the GPU up for some reason unlike the main menu which only gets to 30%.

As for my system specs, Win 7 x64 Home Premium, 16 GB ram, nVidia GTX 660M, Intel i7-3610 QM 4x2.5ghz

Funny how KSP has the same "bug" that Elite Dangerous has, that also doesn't care about being in the background and happily keeps the GPU cooking.

PS: there's no 1.0.2 for version selection here.