I've figured the timing out now, you get between 90 minutes and 2 hours of play on PRO before you have to turn the console on again. Somethings, like pop in gradually start to get closer and the texture pop in and bugs start to stack on top of each other over time. After 2 hours, without a restart of the console, it's like looking at the outer worlds visually, I tried to push it last night past 2 hours and couldn't, it's just not worth it and waiting the five minutes to get things running again wasn't palatable cause the settings all reset, including HDR and have to all be set back after every restart of the console which is the worst glitch I've encountered so far. I can't exactly say yet, if the game is worth all this, played about 9 hours no but in small chunks, at the start I was getting overwhelmed by all the systems so I'd turn it off for a break, now i'm turning it off as the texture pop in gets closer. I've also started ditching cars for the moment cause they are almost certain to bring on the issues earlier and sometimes right away after a hard reset if you get in one and try and change the camera view which is a sure way to trigger the graphical and visual glitches, maybe cause a crash. It's kind of hard to give an opinion on the game underneath when you can't play it for more than 90 minutes at a time or less it an acceptable state but I'd say there is something really decent at the very least if a bit shallow and care in places you'd expect it not to be, a bit like the witcher 3 in that regard. It's certainly not GOAT but it's definitely better than the last game we got like this which was the outer worlds, i just wish it wasn't drawing so many similarities visually to that game right now. Might finish a quick playthrough and wait for a next gen patch and my ps5 next year or the year after.
EDIT: Turning it to 1080p from the console menu helps nearly eliminate these issues building up though and you don't loose much resolution nor does the hud change, you also don't get the roaring fans.