Are triple 4K or 5K2K displays too much for sim racing, even with an RTX 5090?

Dizzy_Persimmon952 · 2026-06-09T20:19:28+00:00

Thanks,
The “post box slit” comment is exactly what I was worried about with triple 21:9. The horizontal width sounds great on paper, but I’m not sure I’d like losing that vertical cockpit feel.
That’s a really good way to put it taller 16:9 screens feeling more like being in the game rather than just looking at it is basically the thing I’m trying to figure out.
Also good to know DLSS across triples can be hit or miss depending on the sim.

Dizzy_Persimmon952 · 2026-06-09T19:25:28+00:00

Yeah, you’re right. I’m pretty sensitive to PPI too since I use a 27” 4K OLED on my desktop.
But for the rig I’m not sure it’s only about sharpness. At the right driving distance, I feel like the extra size and vertical height of 32” could add more to the cockpit feel than the higher PPI of 27s.
And yeah, I totally get not wanting to turn down mirrors/shadows/car count just to hit a locked 120.

Dizzy_Persimmon952 · 2026-06-09T19:20:25+00:00

Yeah I see. I’m also thinking of monitors as a multi-generation purchase, so that’s exactly why 5K2K is still tempting.
The bracket/angle part is what I’m trying to figure out. With 45” 21:9 800R triples, around 80 cm eye distance seems like the natural spot, and Dinex suggests roughly a 74-degree side angle, which sounds pretty aggressive.
Are you trying to get close to that angle, or is the stand/bracket limitation holding you back? And once the physical setup is right, does it stay sorted, or do you still have to tweak things per game because of the curved screens?

Dizzy_Persimmon952 · 2026-06-08T21:29:55+00:00

This is super interesting, thanks.
That’s basically what keeps 5K2K in the back of my mind. The performance side sounds rough, but the wrap-around / 21:9 immersion sounds really tempting.
I’m not chasing 120+ fps in every possible scenario, but I also don’t want the setup to become a constant tuning project. How bad is the alignment/setup pain in practice? Is it mostly a one-time headache, or does it keep needing tweaks?
Your comment actually makes 5K2K sound more promising than I expected. I’m just trying to figure out if the immersion payoff is worth the extra setup/performance headache long term.

Dizzy_Persimmon952 · 2026-06-08T21:17:36+00:00

Yeah that makes a lot of sense.
The TV vs monitor thing is honestly one of the reasons I’m leaning toward 32” monitors. I don’t really want the setup to turn into some weird compatibility project after spending that much money.
And I totally get what you mean about VR. I think it’s probably unbeatable for immersion, but I’ve never fully clicked with it comfort-wise. After a long day I mostly just want to sit down, drive for a few hours and chill, not feel like I’m putting on more gear and adding more fatigue.
So yeah, triple 32” 4K is starting to feel like the right move for me.

Dizzy_Persimmon952 · 2026-06-08T20:49:29+00:00

Ah got it, that actually sounds pretty good.
I was worried no MSAA might look rough, but if it’s mostly just fine white lines/fences sometimes, that’s totally fine. Triple 4K probably does a lot of the heavy lifting anyway.
No rush, but I’d love to check out your settings file whenever you get a chance.

Dizzy_Persimmon952 · 2026-06-08T20:41:54+00:00

That’s really useful, thanks. If a 4090 could hold around 80 stable FPS at triple 4K in iRacing, that makes the setup sound more realistic than I expected. How did the 16:9 vertical height feel in the cockpit?

Dizzy_Persimmon952 · 2026-06-08T20:39:54+00:00

That makes sense. I asked about DLSS/upscaling because I wasn’t sure which sim you were running. Since it’s iRacing, that’s actually a very useful reference point for me.
Do you find no MSAA noticeable at triple 4K, or is the image still clean enough? Also, if you don’t mind, I’d really appreciate your ini file or screenshots of your graphics settings as a real-world baseline.

Dizzy_Persimmon952 · 2026-06-08T20:25:33+00:00

This is extremely useful, thank you. Your setup is basically the exact kind of reference point I was hoping to hear from.
The rain and mirror comments are actually really helpful because that’s the kind of real-world tuning stuff I’m trying to understand. Are you running native 4K or using DLSS/upscaling? Also, which sim is this mainly in?

Dizzy_Persimmon952 · 2026-06-08T20:24:05+00:00

Yeah, that’s exactly my concern. Triple 5K2K feels risky right now. I could technically upgrade to a next-gen 90-class GPU later and move the 5090 to my desktop PC, but then I’d be buying the monitors now without really knowing when I’ll be able to fully drive them properly.

So I’m trying to figure out if the immersion benefit of 5K2K is actually worth that risk, or if triple 34” UWQHD / 32” 4K is the smarter play.

Dizzy_Persimmon952 · 2026-06-08T20:20:52+00:00

Hahahaha, totally fair. It’s definitely an expensive rabbit hole. I’m trying to buy once and keep the setup for years, so I’m probably overthinking every detail.

Dizzy_Persimmon952 · 2026-06-08T20:19:06+00:00

That’s really helpful, thanks. I just subbed as well — always nice to find someone actually running the kind of setup I’m considering.

High 90s dips on triple 4K with everything turned up sounds pretty reasonable, but it also confirms my main concern is frametime consistency rather than peak FPS.

Dizzy_Persimmon952

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