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Low FPS on Windows

Low FPS on Windows: what should you check first?

Before changing a dozen Windows settings, find out whether the game is always slow or only drops in certain moments. That one detail makes the next check much easier.

Start with the simple limits

Check the game's resolution, render scale, graphics preset, and frame cap. An accidental resolution increase or a cap can explain a sudden change. Compare with the same scene and settings you used before. If you play on a laptop, plug it in and check Windows power mode under Settings, System, Power & battery. A higher performance mode uses more power and can make the laptop warmer, so treat it as a test rather than a permanent fix for everyone.

If the PC has both integrated and dedicated graphics, check which GPU Windows assigned to the game under Settings, System, Display, Graphics. Switching to the high-performance GPU can help when the game was using the wrong one, but it will use more power. Restart the game after changing its graphics preference.

See what is busy while you play

Open Task Manager with Ctrl + Shift + Esc. On the Processes tab, sort by CPU, memory, or disk and look for work you did not mean to run during the game. On the Performance tab, watch the GPU and memory while the slowdown is happening. A download, recording app, or full memory can compete with a game. Close only apps you recognize, and save your work first.

A low overall CPU percentage does not clear the CPU. A game can be limited by one busy thread while other cores are idle. Likewise, a busy GPU does not mean Windows needs a registry tweak. If reducing resolution or a GPU-heavy setting raises FPS in the same scene, the graphics workload is probably important. If it barely changes anything, look at the CPU side, the game's own limit, or the scene you are testing.

If FPS fell recently

Think about what changed: a game patch, driver update, new display setting, mod, capture software, or background app. Try reversing one recent change at a time. Check the game's known issues and recommended hardware before assuming every slowdown is a Windows problem. If performance starts normally and falls later, check temperature and clock behavior during a longer session.

Make the next change measurable

  1. Choose a repeatable scene and record average FPS and 1% low, if you have a tool that captures them.
  2. Change one setting or pause one background task.
  3. Repeat the same scene. Keep the resolution, frame cap, and power mode unchanged unless one of those is the thing you are testing.
  4. Keep the change only if the improvement repeats or it solves a problem you can feel.

FixMyFPS can help you check background activity, review targeted actions, and compare a selected game before and after. Its Prioritize your game option reduces CPU priority for background apps you choose while the game has focus, then restores those settings when you switch away, undo, or finish. It does not reserve GPU power or guarantee more FPS. If the game is already limited by its graphics settings or engine, changing background priority may do nothing.

If the average looks good but the game feels rough

Read why games can stutter with high FPS. To make a fair comparison, use our before-and-after testing guide.

Background reading: Microsoft on Task Manager, Windows graphics preferences, and Windows power mode.