photoshop keeps resetting my keyboard shortcuts

just like the title says. whenever i update the programme/reopen it, my keyboard shortcuts and other preferences get reset. i've tried saving over the default shortcuts, making my own separately named shortcut list, etc, and yet my shortcuts keep getting overridden every time i reopen the programme. i make sure that i save my settings every time i adjust my preferences so it can't be that i just "forgot", and it's impossible that i'm forgetting to save my preferences every time i use photoshop when i use it almost daily. it's very annoying to re-do all my preferences whether i want to doodle or do my homework. and it's not reasonable to keep photoshop open forever because having it open in the background while i'm using other heavy programmes like maya or unity makes my laptop turn into the sun. if anyone has advice to prevent this from happening again or any reasons why this is even happening, please let me know.