I have no idea what is this throttle MainMessageLoop, what can I do ? Thanks you !
so thanks to John Hamilton & DMGregory, I found the problem, and figure out a "kind" of a solution. The blue spikes was throwing this types of error:
Unaccounted time between: GPUProfiler.BeginQueries
I download the last version (from Unity 5.6.1 to Unity 5.6.3) and the problem is solved.