Loss 600ish rating from 1800s to 1200s, not on this account, btw.
What's your biggest ever tilt in terms of Points lost

50 points in rapid. I was about to reach 1600 for the first time. I now stop playing after 2 losses in a row to avoid any type of tilt or fatigue, it also helps with my rating
(blitz I play without a care, I keep playing and if I lose I don't really care. I never get titled in bliz because I don't feel it's as important as rapid)
Recently sunk from 1600's all the way down to 1245 Blitz, managed to climb my way all the way back up to 1700
but that 400 points tilt was massive, started when I started playing a tournament