Hi I just purchased this XPS 15 7590 with the FHD display (not the OLED 4k display). I've been really disappointed in how bad gradients look as they become heavily banded and I'm using this laptop for photoshop work.
I have updated all drivers and everything, and found a solution that has me bring up the intel graphics program and bring vivid colors down to natural and back, which temporarily helps reduce banding but only until the next time the screen is off. Then I have to do it again. I still see banding though in soft gradients. My old $500 HP laptop never had this issue so I'm pretty discouraged I just spent almost $2k on this laptop for it to look this bad.
I also notice windows popup application messages are generally extremely blurry. Any solutions or is this just what I'll have to deal with?
I've responded to you via private message and will be happy to assist you further there.