Yeah the other issue is if you increase income, your imputed income for child support is now effectively permanently higher. Child support imputed incomes ratchet up with raises, generally not back down. You will never be able to 'relax' back at a slower/less lucrative job because now the judge says pay the higher rate or go to jail.

Another way to view it: say you get a pay boost 90k -> 190k. The custodial parent will request the imputed income to be recalculated. You now owe an extra 20k PER YEAR. That's your new imputed income, even if you don't get a job like this again and it only lasts a year. Eventually you lose that job and can't find one like it again -- fast forward 10 years. You've paid an extra $200k, just to make an extra 50 or 60k net in one year. You lost $200k by working a higher paid job for a year.

One year of raise followed by 17 years of a slightly more relaxed job at your original income means you LOSE money. In this example, falling from 190k back to your 90k income means child support went from 1/3 of your net check to 2/3 of your net check. A brutal risk to take if you don't think you'll be making the high wage for life.