I definitely know how it feels to hate FFR's timing windows. I've been playing more Etterna than anything, with a few fun FFR runs on rates or other engines. Pushing for equiv or new best scores all the time isn't always the best way to go as I've learned over the years.

Seems like in your state, though you should definitely stay away from FFR the game for a while at the very least and do other things that make you happy and stress-free. Whether or not you decide to pick it up again or not is beyond anyone's knowledge, but it's there if you feel any itch to play again.

We're always here if you need any help with anything.