First of all, UE5 unification was, maybe, the biggest single mistake in the history of AAA industry. This engine never ceases to amaze me of how broken things can be on every platform possible. Despite the fact that it was tackled by different devs with different level of expertise and art-style, traversal stutters, temporal artifacts and choppy FPS are almost always a solid trademarks of UE5 launches.
In BL4 specifically for me it's mostly FPS pacing and stability that are in the toilet (RTX 4080, Ryzen 7700x) though the game itslef is stable even with alt-tabbing. I guess crashes are driver-related because I usually use 1 or 2 versions behind the update curve for stability's sake.
That being said, the game is legit fun with stupendous amount of content and very fun and impactful shooting. Co-op is silky-smooth, including the cross-play. To huge surpruse. Openworld is enormous, interconnected and well thought-out, with enough fun arenas to shoot around and spaces large enough to use vehicles.
The game itself is more Destiny than Destiny, especially in traversal department, and I think it's a good thing. There's also a much darker tone in the overall plot and presentation, though cringe jokes are still there in side content. And I don't think that I'm against them in small portions.
For now, If you don't have an urge to spend 400 hours in co-op with your mates, you should realy put your purchase decision on hold and wait for a month or two for Gearbox to sort out typical UE5 mess of a spaghetti code. Otherwise, it's more (a lot more) Borderlands refined in all the right places with all the right lessons learned from BL3.