I'm still on Sequoia and haven't noticed these issues on my M4 Pro.

Out of interest - whats the output of `system_profiler SPDisplaysDataType`?

You can see the result here:

I'm on macOS 15.7.4.

It's so weird that it says 5120 x 2880 when the ASUS PA329CV is 3840 x 2160.

	▲	smcleod a day ago \| parent [-]
		That's a 404, but if it only says 5120x2880 then you're not running full 4K HiDPI which would show 7680x as per the blog post.