Re: Does Sims 4 support a 21:9 ultra widescreen monitor?
@AlexvonAuen Sims 4 does run properly on a widescreen monitor, although the Map View doesn't fill out the screen. Here's an example:
https://answers.ea.com/t5/Technical-Issues-PC/Sims-stuck-in-windowed-mode/m-p/12587936#M252220
Live mode should be fine; it's just the map that doesn't fill out the screen. And the images aren't distorted at all.
As for your fps, the monitor does not affect the GPU's performance per se. A lower-resolution monitor means fewer pixels, which translates into higher framerates, but it's about the resolution you're using, i.e. the number of pixels your GPU has to render. So you could accomplish the same thing by turning down the in-game resolution on a high-res monitor as you would by getting a lower-res monitor. Try it yourself and see the effects: run Sims 4 at 1920x1080 and compare your framerates with what you get in 4k.
You're not going to see ~100 fps on any kind of iGPU unless you turn down the resolution and/or the other graphics settings, or you're only running the base game and maybe some game or stuff packs. Sims 4 is too demanding these days to get that kind of performance out of an integrated graphics chip. Ultrawide comes in a couple different standard resolutions, but either way, it's going to involve more pixels than 1080p and fewer than 4k, so in-game peformance would be somewhere in between.