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Gaming laptop running slow? A 10-step performance checklist

Updated November 2026 · 6 min read

Short answer

Plug in, set Power mode to Best performance, make sure games use the dedicated GPU, keep the vents clear and the back raised, update the GPU driver, close heavy background apps, and leave 15% of your drive free.

A gaming laptop can lose half its performance to things that have nothing to do with the game. Go through this list once and you'll usually find at least one.

  1. Plug in. On battery, most gaming laptops cut GPU power drastically.
  2. Power mode: Best performance. Settings → System → Power & battery. Also check your laptop maker's app (Armoury Crate, Legion Space, Omen Gaming Hub, etc.) for a Performance or Turbo mode.
  3. Use the dedicated GPU. Check each game with Task Manager's GPU engine column and pin it to High performance. Step by step.
  4. Consider the MUX switch. If your laptop has a "dGPU only" or Advanced Optimus mode, it can add a few percent and lower latency.
  5. Keep it cool. Don't game on a bed or your lap. Raise the back an inch so the intake vents breathe. Heat makes the CPU and GPU lower their clocks, which shows up as FPS that's good for a few minutes and then drops.
  6. Clean the vents. Dust builds up within a year or two. Compressed air through the vents (with the laptop off) often fixes throttling.
  7. Update the graphics driver from NVIDIA, AMD or Intel directly. New games often get fixes and performance updates.
  8. Close heavy background apps. Browsers with many tabs, launchers you aren't using and RGB utilities all take CPU time. Check Task Manager while playing.
  9. Leave free space. Keep at least 15% of your system drive free so Windows and shader caches have room. Roomy (free, same maker) can help.
  10. Match the frame cap to your screen and tune game settings for your bottleneck.

How to know if heat is the problem

Play for 10 minutes and watch FPS. If it starts high and drops steadily while the fans get loud, that's thermal throttling. Framecalm's benchmarks watch clock speeds during a capture and tell you when they sag.

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