-
Sounds like a hardtail. But your pressure is quite high. Hardtails are work to ride and need to be moved. You cannot get away with being a passenger like you can on a hardtail.
I'm 74 kg and run 20/22 f/r on my hardtail. But I doubt you'll eliminate the feeling you're having totally with just pressure. I do now run inserts (cush core xc) always and slightly more pressure than I use to, but if you've alu rims the worst will be a puncture not a cracked rim.
I think that’s the answer, just go somewhere I can ride laps and keep dropping the pressure.
I have no problem on loose rock like we get in the peaks but rooty soft loam in forests and bumpy grass field paths and I’m screwed! Feels like my seat bounces me up and down constantly on that stuff.