What Is FPS Boost on Xbox Backward Compatible Games?

FPS Boost is a feature on Xbox Series X and S consoles that increases the frame rate of older backward-compatible games without any patch from the original developer. It can take a game that ran at 30 frames per second on the last generation and run it at 60 or even 120, making it feel dramatically more responsive.

How it works

The Series consoles have far more horsepower than the Xbox One and Xbox 360 hardware many older games targeted. Microsoft uses that headroom to run selected backward-compatible titles at higher frame rates through system-level enhancement, so a 2015 game can suddenly play at double or quadruple its original smoothness.

What it does and does not change

FPS Boost raises frame rate, which improves motion clarity and input responsiveness. It does not increase resolution or add ray tracing; those are separate enhancements. Sometimes the console lowers resolution slightly to hit the higher frame target, a trade most players happily accept.

Typical results

How to enable it

For supported games, open the game’s compatibility options from its details menu (press the Menu button on the game tile, then Manage game and add-ons, then Compatibility options). Toggle FPS Boost on. Not every game supports it; Microsoft maintains a curated list of enhanced titles.

Do you need a special TV?

To benefit from a 120 fps boost you need a display capable of 120Hz over HDMI 2.1 and 120Hz output enabled on the console. For 60 fps boosts, any standard 60Hz TV shows the improvement. Either way, the responsiveness gain is felt even if your display caps the visible frames.

Why older games can suddenly run faster

Games from the Xbox One and 360 eras were often capped at 30 frames per second because the hardware of the time could not sustain more. The Series X and S have vastly greater CPU and GPU power, so that same code runs with enormous headroom. Microsoft’s system-level enhancement raises or removes the frame cap for approved titles, letting the modern console express performance the original hardware never could.

Interaction with Auto HDR

FPS Boost frequently pairs with Auto HDR, another Series feature that adds high-dynamic-range lighting to older games that never shipped with it. Together they can make a decade-old title feel remarkably modern, smoother motion plus richer contrast, without any new download or patch from the developer. Both are toggled independently in the game’s compatibility options.

When to leave it off

Occasionally a higher frame rate exposes physics or animations that were tied to the original 30fps target, causing minor quirks. In those rare cases, turning FPS Boost off restores the intended behavior. Because the toggle is per-game and instant, you can experiment freely and revert if a specific title behaves oddly at the boosted frame rate.

Finding boosted titles

Microsoft maintains and periodically expands the list of FPS Boost titles, so it is worth checking whether your favorite older games have gained support since launch. The console also labels enhanced games in their details, and you can filter your library to see which titles offer the feature. Because enabling it is free and reversible, the practical advice is simple: for any supported game you own, turn FPS Boost on, play a bit, and enjoy the smoother experience. It is one of the rare upgrades that costs nothing, requires no new hardware, and instantly modernizes games you already have.

FAQ

Does FPS Boost work on every old Xbox game?

No. Only titles Microsoft has specifically enabled support it. The list has grown over time but does not cover the entire back catalog.

Will FPS Boost hurt image quality?

Occasionally the console drops resolution slightly to sustain the higher frame rate. Most players find the smoother motion well worth the minor sharpness trade.

Does FPS Boost work on Xbox Series S?

Yes, FPS Boost is available on both the Series X and the Series S for supported titles, though the S’s lower power can affect which games and target frame rates are enabled. Check the game’s compatibility options on your console to see what is available for your specific system.

Bottom line

FPS Boost gives supported backward-compatible games higher frame rates for free, making older titles feel modern. Check a game’s compatibility options to see if it is available and flip it on. Because it is free, reversible, and instant, there is no reason not to try it on every supported game you own and enjoy the smoother result.