And the bad news...
^This. Everyone that is complaining about this needs to turn LKA off and see if you still have an issue. I believe this is also why some people get motion sickness in the Ascent. There is no warning noise when LKA kicks in and it does it well before the lane departure warning beeps.
And, I hate to say this because some people will respond poorly to it, but, if the "problem" goes away when you turn off LKA, then I'd suggest turning it back on and realizing you're not yet aware and used to the width of the car. I can easily and repeatedly hang on the edge of a lane line. LKA doesn't prevent that. If it's turning on, you're heading towards a lane departure, planning on swerving at the last moment or inches from crossing the lane markings.
It's the same thing with lane departure warnings that some have complained about. I can literally touch the very edge of the lane marking with the tires without it complaining - if it's going off, you're in someone else's lane.
FYI: I realized all of the above was true because it happened to me - but I used the front camera to see where I was in the lane... and the answer I found was that I was hanging into someone else's.
So, now, I've made a point of playing the "let's not annoy LDW" game, and also used the cameras to see how I was doing. I'll be posting a video soon with simultaneous inside and outside views so everyone can see just how close they can get using either system (LKA: nearly touching, LDW: sidewalls and mirror virtually hanging over the line).