Why Your FPS Keeps Dropping (And How to Actually Fix It)

If your FPS keeps dropping in the middle of matches even though your PC “should” handle the game fine, the cause is almost always one of a short list of things: heat, background software, a driver or overlay fighting for GPU time, a CPU or GPU bottleneck, or your storage drive stuttering under load. This guide walks through each cause in the order worth checking, with the actual fix for each one.

Last checked: November 2026. Steps are written for Windows but the diagnostic logic (temperatures, background load, bottlenecks) applies to any platform.

On this page

• 1. Thermal throttling
• 2. Background apps and overlays
• 3. Outdated or conflicting GPU drivers
• 4. CPU or GPU bottleneck
• 5. Storage stutter (1% lows)
• 6. In-game settings that quietly tank frame times
• FAQ

1. Thermal throttling

If FPS is fine for the first 10–15 minutes of a session and then sags, thermal throttling is the most common explanation. Both CPUs and GPUs cut their clock speed automatically once they cross a temperature limit, and that shows up in-game as a drop rather than a crash.

• Check load temperatures with a monitoring tool (HWInfo or similar) during a 20-minute session. Sustained CPU temps above roughly 85–90°C or GPU temps above 83–85°C on most consumer chips are a sign you’re hitting the limit.
• Laptops are the most common case: a hard surface blocking intake vents, or years of dust in the heatsink, is often the entire problem. A cooling pad or a can of compressed air can fix it in minutes.
• On desktops, check that case fans are actually spinning and that the CPU cooler is seated correctly, especially after a recent upgrade or clean.

2. Background apps and overlays

Recording software, browser tabs with video or ads, chat overlays, and even some launcher overlays compete for the same GPU encoder and CPU time your game needs. This is a particularly common cause of random, short stutters rather than a steady low framerate.

• Close browser tabs and chat apps you’re not actively using during a game session, not just minimize them.
• Disable one overlay at a time (Discord, GeForce Experience/NVIDIA app, Steam) to isolate which one is responsible, rather than disabling all of them at once.
• If you record gameplay, test with recording off — hardware encoding software still has a measurable cost on mid-range systems.

3. Outdated or conflicting GPU drivers

A driver that’s several versions behind, or one installed on top of a previous driver without a clean uninstall, is a frequent and easy-to-miss cause of inconsistent frame pacing.

• Update to the current driver from your GPU vendor directly rather than through Windows Update, which can lag behind.
• If problems started right after a driver update, a clean reinstall (uninstalling the old driver fully before installing the new one) resolves more cases than a simple “update over the top.”
• Game-ready/optimized drivers released close to a specific title’s launch sometimes fix per-game stutter that a generic driver update won’t.

4. CPU or GPU bottleneck

If one component is maxed out while the other sits idle, frame rate is capped by whichever one is the bottleneck — and the fix is different depending on which it is.

• Open a monitoring overlay (RivaTuner Statistics Server, or your GPU vendor’s own overlay) showing CPU and GPU usage live. If GPU usage is pinned near 99% and FPS is steady, that’s a GPU-bound scene — expected, not a bug. If GPU usage dips while CPU usage on one or two cores spikes, you’re CPU-bound.
• A CPU bottleneck is common in competitive shooters at high refresh rates and in simulation/strategy games with lots of active units — lowering render resolution won’t help much there; lowering CPU-heavy settings (draw distance, NPC/unit count, physics detail) will.
• A GPU bottleneck responds to lowering resolution, lowering shadow/reflection/ray-tracing settings, or upgrading the graphics card.

5. Storage stutter (1% lows)

If average FPS looks fine but the game still feels stuttery, the issue is usually in the 1% low framerate rather than the average — and that’s frequently a storage problem, not a GPU one.

• Games installed on a hard drive, or an overfilled SSD (above roughly 85–90% capacity), can stall briefly while streaming new textures or level data, which reads as a stutter rather than a sustained drop.
• Moving the game to an NVMe SSD with free space, where possible, is one of the more reliable single fixes for texture-streaming stutter in open-world titles.

6. In-game settings that quietly tank frame times

A few specific settings cause outsized frame-time spikes relative to their visual benefit:

• Shadow quality and shadow draw distance — often the single most expensive setting in open-world games.
• Uncapped V-Sync without a frame limiter — can cause input lag and frame-time inconsistency; a frame-rate cap a few FPS below your monitor’s refresh rate is usually smoother.
• Ray tracing and other screen-space effects — the biggest single toggle for recovering frame rate on mid-range GPUs, with upscaling (DLSS/FSR/XeSS where available) as a way to claw some of it back.

If you’re also picking out new hardware to fix persistent, not just occasional, FPS problems, our hardware section covers the gear side of this in more depth, and our guide to mechanical keyboard switches is a useful next read if input feel, not frame rate, turns out to be what’s bothering you about competitive play.

FAQ

Why does my FPS drop only in certain areas of a game?

That pattern usually points to a GPU-bound scene (more on-screen geometry, particles, or lighting in that specific area) rather than a system-wide problem. Compare GPU usage in that area versus elsewhere — if it’s pegged near 100%, the area is simply more demanding.

Is it normal for FPS to drop when more enemies or players are on screen?

Yes, to a degree — more active entities means more CPU work for AI, physics, and networking. A small dip is normal; a severe one (dropping by half or more) usually means you’re CPU-bound and should lower CPU-side settings rather than resolution.

Can a weak power supply cause FPS drops?

Indirectly, yes. An underpowered or failing PSU can cause a GPU to throttle under load to avoid drawing more power than it can safely deliver, which looks identical to thermal throttling from the outside. This is more common with older or lower-wattage power supplies paired with a recently upgraded GPU.

Does closing background apps actually make a measurable difference?

On systems with 16GB of RAM or less, or mid-range CPUs, yes — a browser with many tabs or a recording tool can take several FPS in CPU-limited games. On high-end systems with plenty of headroom, the difference is usually small.

Trying to hit a stable frame rate for an online qualifier rather than casual play? Our breakdown of how esports tournament brackets work covers the format side of competing once your performance is sorted.

Have a fix that worked for you, or a specific game where this guide didn’t help? Let us know through the contact form — corrections and real-world results from readers get folded back into guides like this one.

Source: troubleshooting steps cross-checked against AFK Gaming’s FPS troubleshooting guide (accessed November 2026).