Third person BP, in a very heavy scene, slow mouse polling

Development Programming & Scripting
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Hi to everyone, I’m building a very simple but very heavy scene: An automated mechanical machine, with a lot of animated skeletal mesh in it.
Visually is very simple: an object full of objects in the center, and a pawn taken straight from the “third person BP” template, without the moving capabilities, only the rotation using mous x and y.

The problem is: I’ve basicalli two maps, one with very few animated mesh, and one with a lot of animated mesh.
In the first one, everything ok, in the second one, the heavier, the animations are ok, very fluid, but the mouse, have a polling time inusable, very very slow and lagging…

Any idea?

the thing that disturb me, is that the animations are fluid, like 40-50 fps, but the cam/mouse movements are polled like 2-3 fps… so it’s not a performance problem…

Later I’ll post some video example if needed!

Thanks to you all for the help

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video examples
Here are the video examples of the effect I’m talking about.

As you can see in the second video, the laggy one, the internal machine movement are fluid… but not the camera ones…

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Oh, and by the way:

If I keep the builded animation on for some hours, it even slow more down, become like 0-1 fps of mouse polling