I thought it could mean that the 3D court was displayed behind the menus in such a case, but after checking that, it shouldn't be the case. However, the camera processes some stuff (ie: it dismisses everything on every frame to avoid to render them
), so it could be a tiny bit heavier on the CPU, but that would be strange to be enough to create such an effect, so I'm not sure it's the cause or not...
[... more checking ...]
So I checked the CPU & GPU utilisation : for the GPU, it goes up to 42% from 41% on that screen (after & before the 3d Match). For the CPU, there's not much difference either, but there's a big jump from 1% in the main to 4% (I have 32 cores, so I guess on one core it might be like jumping from 25% to 100% or something like that). And the main menu GPU usage is 24%
So anyway, the Rankings and the Draw are indeed menus that use a lot the CPU (and a bit more of GPU) because they contain a lot of elements that are recalculated on each frame. It's much simple to handle for me.
So I guess that after a while, even without playing a 3D match 1st, your CPU (and maybe GPU) should heat up and the fans should go up.
I hope it's not too much of a hassle for you..?