It doesnt really matter which one becouse all of them were doing the same. Some of them were affected more (Amtrak SDP40F) some less (BNSF SD70ACe) but all were jumping. I also used BNSF C44-9W (on screenshot above) and Amtrak SW1500 for testing.
I also was trying to recreate this bug today and.. everything was working fine as it should.. now i dont get it why is that ._.