How do I prevent this unintended platform speed(.capx)

I'm creating an auto-runner with some changes in the terrain that is a bit more dynamic, with some ups and downs, but the player has some weird movement changes when he is going down and I can't figure what is causing this.

[attachment=0:al6oj2k9][/attachment:al6oj2k9]

Player's collision polygon is bonkers.

zenox Thats weird because I already changed it a few times and didn't help. I'll try again

zenox It helped but start happenning again when the time scale is higher than 1.3. Why would it happen if the colision polygon is the same? :/

Edit: zenox After fixing the colision polygon I realized that it always happens after the floorObj with the animation 0 and 2. I did several minor changes regarding to position and colision polygon. Nothing seems to stop this weird "teleport", only get worse. If you put the time scale to 2.0 you will see it more often. I was able to see that by using the event "if PlayerObj is not on floor > set time scale to 0), but I have no idea why this happen. Also, when this happen the player's speed get higher than 450, which would never be possible because this speed is constant and I'm 100% sure that I'm not changing the speed. I think the player wants to fly lol