FSR on the Steam Machine: Which Mode, and When

The short answer

FSR (AMD FidelityFX Super Resolution) renders your game at a lower internal resolution, then reconstructs it up to your display resolution. You trade a little image sharpness for a lot of extra frames. On the Steam Machine, the rule is simple:

• Targeting 1080p? Most games need no FSR at all. The Machine (RDNA 3, 28 CU, ~RX 7600 / RTX 4060 class — estimated) handles 1080p high natively in a large share of titles. Save FSR for the genuinely heavy ones.
• Targeting 1440p? Turn on FSR Quality as your default. That single setting is what makes 1440p comfortable on this hardware.
• Targeting 4K? Don't. This is an 8 GB VRAM, 1080p/1440p machine. Native 4K is not the honest goal here — see which device to buy if 4K is your priority.

Everything below is the reasoning and the gotchas.

What FSR actually does

FSR is upscaling plus reconstruction. Instead of drawing every pixel at your output resolution, the GPU renders fewer pixels and an algorithm rebuilds the rest. Fewer pixels rendered = lower GPU load = higher frame rate.

The newer temporal versions (FSR 2 / 3 / 4, depending on the game) also pull detail from previous frames, which is why a moving image can look sharper than a single still suggests — and why most artifacts show up in motion, not in screenshots.

The three modes differ only in how aggressively they cut the internal render resolution:

• FSR Quality — lightest reconstruction. Renders at roughly 67% of output width per axis. Best image, smallest frame gain.
• FSR Balanced — middle ground. Noticeably softer than Quality, more frames.
• FSR Performance — heaviest reconstruction. Renders at roughly 50% per axis. Most frames, softest image and the most visible artifacts.

Lightest-to-heaviest reconstruction: Quality → Balanced → Performance. More aggressive mode = more frames, less image fidelity.

When 1080p needs FSR (and when it doesn't)

At a 1080p target, FSR Quality is only rendering at ~720p internally — and at that low a base resolution, reconstruction artifacts get easier to spot. So the order of operations at 1080p is:

1. Try native 1080p first. On the Steam Machine, a lot of games will already sit in a comfortable range at high settings (qualitative — there are no first-party measured numbers for this device yet).
2. If you're short on frames, drop settings before reaching for FSR. Shadows, volumetrics, and ray tracing cost the most for the least visible gain. Trimming those is often cleaner than upscaling at 1080p.
3. Use FSR Quality at 1080p only for the heavy hitters — demanding open-world or ray-traced titles where settings cuts alone don't get you there.

The takeaway: at 1080p, native is the default and FSR is the exception.

When 1440p needs FSR (almost always)

1440p is ~78% more pixels than 1080p. That's exactly the gap FSR is built to close, and on this hardware it's the resolution where FSR earns its keep.

• FSR Quality at 1440p renders at ~960p internally — high enough that the reconstructed image holds up well, and you still get a real frame-rate boost. This is the sweet spot for the Steam Machine.
• Reach for Balanced only when Quality isn't enough in a particularly demanding game and you'd rather keep settings high than drop them.
• Performance at 1440p is a last resort. By then the internal resolution (~720p) is low enough that you should ask whether you'd be happier targeting native 1080p instead.

Watch VRAM, too. 8 GB of GDDR6 is the real ceiling on this machine. Upscaling lowers the render cost but does not shrink texture memory — if a game stutters at 1440p with high-res texture packs, the fix is lowering texture quality, not changing FSR mode. Per-game behavior lives in the game verdicts.

Image-quality gotchas to watch for

FSR isn't free. The heavier the mode, the more of these you'll notice:

• Ghosting / trailing — faint smears behind fast-moving objects (a sprinting character, a swinging weapon). Most visible in Performance mode. Stepping up to Quality usually cleans it up.
• Shimmer / fizzle — thin geometry like fences, foliage, power lines, and HUD edges sparkling or crawling in motion. A telltale sign the internal resolution is too low; raise the FSR mode toward Quality.
• Softness — the whole image looking slightly out of focus. Many games expose a sharpness slider alongside FSR — nudge it up a notch, but don't overdo it or you'll add edge "ringing."
• Don't stack upscalers. Pick FSR or the game's own resolution scale, not both. Doubling up on reconstruction multiplies the artifacts.

Because SteamOS 3 runs everything through Proton, FSR behaves the same as it does on any AMD Linux box — the in-game FSR options are the ones that matter, not a Proton-level setting. See the methodology for how we evaluate this.

A simple decision rule

Copy this and you're done:

1. 1080p target → run native high. Add FSR Quality only if a specific game won't hold up after trimming shadows/RT.
2. 1440p target → start with FSR Quality always. Drop to Balanced only if a demanding title still struggles.
3. Fast, competitive shooters → favor the more aggressive mode (Balanced) for frame stability; you won't notice softness while moving, and smoothness wins.
4. Slow, scenic single-player games → favor Quality (or native at 1080p); you'll be staring at detail, so protect the image.
5. Stutter, not low FPS? That's VRAM. Lower textures — don't touch FSR.