Low FPS has a short list of usual suspects. Before spending money on new hardware, work through these seven checks — most frame-rate problems are solved by step three.
1. Find your bottleneck first
Every low-FPS story starts with one question: is your CPU or your GPU holding you back? Run your exact parts through our bottleneck calculator for your game. Upgrading the wrong component is the most expensive mistake in PC gaming.
2. Check what is running in the background
Browser tabs with video, Discord hardware acceleration, and Windows Game Bar recording silently eat CPU and GPU time. Close them, retest, and compare against your estimated FPS — if the numbers suddenly match, you found it.
3. Upscaling is free performance
If your game supports DLSS or FSR, quality upscaling mode typically buys 15-25% more frames for image quality most people cannot tell apart. Check Warzone or Cyberpunk 2077 on your hardware to see the exact gain before touching anything else.
4. Shadows and volumetrics first
Across hundreds of games in our database, shadows and volumetric lighting cost the most frames per unit of visual quality. Drop those two before anything else. Our settings optimizer walks through the exact order for your target FPS.
5. RAM running in single channel
One stick of RAM instead of two can cost 10-20% of your FPS in CPU-heavy games like Fortnite endgames. Check that your memory runs in dual channel — it is a free fix if you already own two sticks.
6. Thermal throttling
A dusty cooler or dried thermal paste makes your GPU quietly downclock. If FPS starts fine and decays over 20 minutes, watch temperatures, not settings.
7. Storage stutter in open worlds
Open-world streaming on a spinning hard drive causes hitching no setting can fix. An SSD is the cheapest meaningful upgrade for games like Cyberpunk 2077.
Still stuck? Plug your parts into the FPS calculator to see what your PC should be doing — then the gap tells you where to look.