4K or Wqhd?

Hello, I would like to dive into the world of OLED monitors. But I'm wondering whether to go for 4K or WQHD.

My specs:

RTX 5080

Ryzen 7 9800X3D

Games:

Pretty much everything, shooters, WoW, Factorio...

Price is secondary for now. However, I'm currently worried that my computer won't be able to handle 4K for very long, despite its high-end performance. Is 4K worth it?

The new Gigabyte tandem OLED would be an option for WQHD, as the comparable Asus is not available in my region.

As a 4K monitor, the XG27UCDMG would currently be my favorite.

But why 4K? Actually, my sweet spot has ALWAYS been WQHD 27 inches. But text clarity is also important to me, and this problem should be completely eliminated by 4K. In addition, I'm currently reading some not-so-good things about the Gigabyte monitor in relation to vertical banding...

Does anyone have any experience with this and can help me out?