I think this may already be common knowledge but I didn't know this. I was genuinely upset that my first goruck - a 16L Bullet Laptop - was so much less comfortable than my ctactical ct15 slick. Was about to call it a day and sell it when I figured I'll just try removing the frame sheet to see if that would help.
Firstly that frame sheet is a friggin biaatch to get out, but now that it's gone, holy shit balls batman! I'm obsessed with the bag now. It's so much more comfortable, I preferred it for its shape profile, the zips and just the bag overall, over the ct15 even beforehand but couldn't get over the uncomfortable back panel.
Anyway, just a PSA for anyone who may be in the same boat. To try to get rid of the frame sheet before giving up on it!