Got PIPed last year, left immediately.
Got 3 mo free pay from XOM, 1 mo relaxed, started new job in the same field - process control. 12% less pay but 6% 401K match, 10% bonus, so almost the same pay overall. Much nicer people. Many more opportunities. I feel like I am out of prison.
Thanks to XOM for the PIP, otherwise I would still be stuck at XOM. I felt I was surrounded by politicians, back stabbers and incompetent people. No going back. XOM not worth it. To those unfortunate not getting PIP, PIP yourself into a new better world.