You're saying that it has to do with peaks? I think you misunderstood what i said, it's not about amplification or sound level, there's no problem there.
Sounds are crystal clear, it's the sequencer that skips a few sequences of the song here and then for some reason

say i'm in Bar 1, from some reason, a few instants before going into bar 2, Reason will skip just a few milliseconds, ruining the loop/flow of the song.. that's only during playback, not after the song is exported.

But try to play notes and staying in tempo when the beat skipps for no reason and in no predicted times lol.. very, very, very frustrating