Two months ago, I upgraded from my loyal 3 year old friend aka Note 10 Lite to the S22 Ultra (for a low price of 350€ from a trust worthy seller). It's an upgrade yeah, but apart from the way better camera, long software support, and the slight convenience of wireless charging, I don't feel like it's a huge difference. My note 10 lite still delivers even when comparing performance in general. S22 Ultra heats up like crazy and loses performance and battery life because of it. I don't know if it's like that in general because I don't upgrade often but I don't feel like I'm gaining a lot performance wise. For that reason, I still have both and change them up occasionally... Would you consider selling the S22 Ultra for about 400/450€ while it's still relevant, save the money up and maybe wait a few month for the S23 Ultra to drop price or just stick with the 22 Ultra instead, in hopes that updates fix some of those issues?
It's been a year since the s22 ultra was released, if you are not satisfied with the performance now. Consider, selling and saving for the s23 ultra. Make sure to test drive in case the difference is not that huge and you could've probably lived with the s22 ultra.
S23U is very similar to the S22U but with a much better CPU that leads to better battery life, cooler performance, and higher fps in games. But realistically it's still very similar to S22U
I'd wait till S24U if you wanna upgrade again. Or go Fold for something totally different (I'm rocking Fold5 rn)