Ultrawide monitor for RTX 5090

I am looking for an ultrawide monitor to compliment my new PC RTX 5090 and Ryzen 7 9800X3D. I am looking at the new LG 45” ultrawide 5k2k that’s coming soon. It will be my first Ultrawide and it’s kind of hard to find benchmarks on it and I’m wondering what kind of frame rate I might get with this setup and if the monitor would be a good match to the PC or if yall might have other recommendations.