On an NVIDIA RTX card, DLSS Quality usually gives the cleanest picture in ACC, because it replaces anti aliasing with its own temporal method and keeps edges calm. FSR is the better pick on AMD or older NVIDIA cards, because it works on every GPU and lets you keep your own anti aliasing choice. In 2026, the best option is the one that keeps your frame rate stable while braking boards and mirrors stay readable.
So the real question is not which logo wins, but what your screen and graphics card need. Below, we explain what each option does in plain words.
What do DLSS and FSR actually do in ACC?
Both tools render the game at a lower resolution and then scale the image up, but they do it in a different way.
DLSS: temporal and RTX only
ACC added NVIDIA DLSS 2.0 in update 1.8. It needs an RTX 20 series card or newer. DLSS looks at several frames in a row to rebuild detail, and it includes its own anti aliasing. That is why ACC locks the manual anti aliasing choice when DLSS is active. Kunos ships its own DLSS file with the game, and swapping it for a generic file may reduce image quality.
FSR: spatial and works everywhere
AMD FSR came in the same update. It is a spatial upscaler, which means it sharpens one frame at a time. It runs on AMD and NVIDIA cards alike, and you combine it with a temporal anti aliasing method of your choice. One limit to remember: FSR does not work with the Projection Correction view option.
Temporal upsampling and TAA Gen5
ACC also has its own temporal upsampling and, since update 1.8, a TAA Gen5 option next to TAA Gen4 and KTAA. TAA Gen5 improves edge clarity at a moderate cost. It only works with temporal anti aliasing selected. For many drivers this native mix already looks good at 100 percent resolution.
Which option should you choose?
Your choice depends on your graphics card, your screen setup and how much frame rate you need.
RTX card on a single screen
Start with DLSS Quality. It keeps fences and kerbs from shimmering, and the image stays close to native. Performance and Balanced modes give more frames, but test sites report more blur and ghosting behind cars. If you see trails behind opponents, step back to Quality.
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AMD card or GTX card
Use FSR Quality with TAA Gen5 or KTAA. Some testers find FSR Quality slightly slower than DLSS Quality, but very close to native sharpness. On AMD hardware it is simply the only choice of the two.
Triple screens or VR
Both DLSS and FSR work in triple screen mode and in VR. At very wide resolutions they give the biggest gain. Read how to set up triple screens in ACC first, so your upscaler works on a correct image. For headsets, our ACC VR settings guide goes deeper into OpenXR and DLSS.
How do you test which one looks best?
Your own eyes decide, so use a simple and repeatable test.
Use the same track and the same moment
Pick a track with fences and trees, such as Spa or Monza. Drive the same corner with each option and look at three things: the braking board at 100 metres, the edges of the fences and the cars in your mirrors. The best option keeps all three readable without shimmer.
Watch the lowest frame rate, not the average
A high average means little if the frame rate dips in traffic. Use an overlay and note the lowest value in the first lap with a full grid. If DLSS or FSR lifts that number above your refresh rate, you feel the gain right away.
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Keep your screen steady during the test
Small image differences are hard to judge when the screen wobbles. Johan Akkerman, founder of SIMGASM, learned this through years of testing cockpits, wheelbases and screens from across the market. That is why SIMGASM checks every product inside a complete simulator, including the monitor mount, and not as a loose part on a table.
Settings that matter more than the upscaler
An upscaler cannot save a setup that is too heavy in the first place.
Mirrors and shadows cost the most frames in ACC. Lower mirror quality and shadow quality before you lower resolution, as our Assetto Corsa Competizione graphics settings guide explains. Screen size also plays a role: a bigger screen at the same resolution shows blur sooner. See our guide to the right monitor size for sim racing for the details.
If you still miss frames after all this, the bottleneck is often the processor, not the graphics card. Our article on sim racing PC upgrade priorities helps you decide where to spend.
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Questions about DLSS and FSR in ACC
Here are short answers to the questions we see most often.
Does ACC support DLSS?
Yes. DLSS 2.0 arrived in update 1.8 and works on NVIDIA RTX 20 series cards and newer.
Why is anti aliasing locked when DLSS is on?
DLSS brings its own anti aliasing. ACC therefore disables the manual choice to avoid doing the same work twice.
Is FSR worse than DLSS in ACC?
Not always. FSR Quality looks close to native in many tests and works on every GPU. DLSS often keeps edges calmer on RTX cards.
Can you use FSR with Projection Correction?
No. ACC states that FSR does not work with the Projection Correction view option, so pick one or the other.
Want to learn more? The SIMGASM experts are happy to help.
