A game that stutters on a card that should handle it is annoying, and the card itself is rarely the problem. Old drivers, trapped heat, a CPU that can’t keep up, or a setting that eats half your frame rate can cost more performance than a weak GPU. The fixes below run from free and quick to a bit more hands-on. Test after each change and stop when the game feels right.
The short version: blzab check what is limiting you, update the driver, fix cooling, lower the waed sognoelxz uabflcja, use upscaling, and only then eraclban undervolting or overclocking.
Find out what is holding the GPU back
Before you change anything, watch the card while a game runs. HWiNFO is free and shows GPU load, temperature, clock speed, and power draw in one window. Play for ten minutes, then compare what you see with the table below.
| What you see | What it usually means | Where to start |
|---|---|---|
| GPU load at 95-100%, FPS still low | The GPU is the limit | Settings, upscaling, tuning |
| GPU load well below 90%, one CPU core maxed out | CPU bottleneck | Lower CPU-heavy settings such as crowd density and view distance; check the CPU and RAM |
| GPU clock falls as temperature climbs | Thermal throttling | Cooling section |
| GPU clock falls while power draw sits at its limit | Power limit | Undervolting section |
| Stutter when GPU memory is full | VRAM limit | Lower texture quality and resolution |
Most of the advice below only helps if the first row describes your PC. If your CPU is the problem, a GPU tweak won’t move the needle.
Update your graphics driver
Driver releases often include fixes and optimizations for games launched in the previous few weeks, so this is the cheapest step. Download drivers from the manufacturer’s own site (NVIDIA, AMD, or Intel) rather than relying on Windows Update, which can run behind.
If performance got worse after an update, or you swapped between NVIDIA and AMD cards, do a clean install. Display Driver Uninstaller removes leftover driver files when run in Windows Safe Mode, and a fresh install afterward clears up a surprising number of odd problems.
Adjust a few Windows settings
None of these will transform your frame rate, but they remove small, avoidable drags.
Turn on Game Mode under Settings > Gaming. It limits background interruptions such as update installs and notifications while a game runs. Set the Windows power mode to Best performance, and on a laptop, plug it in. Laptop batteries often cap GPU power.
Hardware-accelerated GPU scheduling sits under Settings > System > Display > Graphics > Change default graphics settings. Results vary with your CPU, GPU, and driver, so test with it on and off. It needs a restart each time you change it.
On a laptop with both integrated and dedicated graphics, go to the same Graphics page, add your game, and set it to High performance. This stops the game from quietly running on the weaker chip.
Finally, close what you don’t need. Browsers with many tabs, screen recorders, and overlay apps all take a share of the GPU.
Lower the settings that cost the most
Not every setting costs the same. Dropping the right two or three can add more frames than any tuning tool, with little visible change.
| Setting | FPS cost | What you lose by lowering it |
|---|---|---|
| Ray tracing / path tracing | Very high | Noticeable lighting and reflections |
| Resolution or render scale | Very high | Obvious sharpness loss |
| Shadow quality | High | Moderate; hard to spot in motion |
| Volumetric fog and clouds | High | Slight to moderate |
| Anti-aliasing (MSAA especially) | Moderate to high | Some edge smoothness |
| Ambient occlusion | Moderate | Slight |
| Texture quality | Low, if you have the VRAM | Large; only lower it when VRAM is full |
| Anisotropic filtering | Very low | Small; leave it high |
I’d start by dropping shadows from Ultra to High and turning down volumetric effects. In most games, the difference is hard to see while you’re playing, and the gain is real.
Use upscaling and frame generation
Upscaling renders the game at a lower internal resolution and rebuilds the image at your display resolution. It is the single biggest free performance gain in supported games.
NVIDIA’s DLSS upscaling works on RTX cards. Frame generation needs an RTX 40 or 50 series card, and Multi Frame Generation is limited to the RTX 50 series. AMD’s FSR 4 upscaling requires a Radeon RX 9000 series card, according to AMD’s developer page, while older Radeons use FSR 3.1. Intel’s XeSS is also available in some games.
Pick the Quality preset first. Balanced or Performance modes give more frames but show more softness and shimmer. Frame generation raises the number of frames you see, but it does not make the game respond faster, and it can add a little input delay. A common rule of thumb is to have a base frame rate of around 60 FPS before turning it on. For fast competitive shooters, I would leave it off.
Keep the card cool
A GPU that gets too hot lowers its own clock speed to protect itself. That is thermal throttling, and it shows up as frame rates that start high and sag after twenty minutes.
Many cards sit comfortably somewhere between the 60s and low 80s °C under load, but the exact limit differs by model, so check your manufacturer’s spec sheet. What you want is a steady clock speed, not a specific number.
Things that help, roughly in order of effort:
- Clean the dust from the GPU fans, case filters, and heatsink fins with compressed air. Hold the fans still so they don’t spin up and get damaged.
- Check case airflow. Cool air should come in at the front or bottom, and warm air should leave at the rear or top. Cables blocking the intake or a case pushed into a cabinet will undo a good cooler.
- Adjust the fan curve in your tuning software so the fans ramp earlier. It costs some noise.
- On cards a few years old, replacing dried-out thermal paste or pads can bring temperatures down. It can also void the warranty, so skip it if the card is still covered.
Undervolt first, overclock second
Undervolting lets the card hit the same clock speeds with less voltage. The result is lower heat, lower power draw, and less fan noise. Because the card throttles less, it often holds its boost clocks longer, which can make performance steadier. The gain comes from reduced throttling, not from extra raw speed.
MSI Afterburner works with both NVIDIA and AMD cards, and AMD’s own Adrenalin software has built-in tuning for Radeon cards. A sensible routine looks like this:
- Run a benchmark such as the Unigine Superposition test and note the score, temperature and power draw.
- Lower the voltage in small steps, or cap the voltage at a chosen clock using the voltage-frequency curve.
- Rerun the benchmark and play a demanding game for 15 to 30 minutes.
- If you see crashes, flickering, or strange colors, back off.
Overclocking raises the core or memory clock instead. Increase it in small steps, around 25 MHz at a time, and test after each one. The gain is usually a few percent, which rarely changes how a game feels. Some manufacturers treat overclocking damage differently under warranty, so read your card’s terms first.
Turn on Resizable BAR
Resizable BAR lets the CPU access the GPU’s full video memory at once instead of in small pieces. It needs a compatible CPU, a motherboard with the setting enabled in BIOS (usually together with Above 4G Decoding), and a supported GPU. AMD calls its version Smart Access Memory.
Gains depend on the game. NVIDIA’s own guide notes that some titles run slower with it on, so the company uses game profiles to enable it only where it helps. You can confirm it is active in the NVIDIA Control Panel’s system information or in GPU-Z. Intel Arc cards are known to perform poorly without it.
Check the rest of the PC
A strong GPU can still be held back by what surrounds it.
- CPU: an old or low-core-count processor can cap frame rates, especially in open-world games and at 1080p.
- RAM: two matched sticks running in dual-channel mode perform better than a single stick.
- PCIe slot: the card should sit in the main x16 slot, not a secondary slot that runs at lower bandwidth.
- Power supply: a weak or failing unit can cause crashes and clock drops under load.
- Storage: installing big games on an SSD reduces stutter when textures stream in.
Things that don’t help much
“FPS booster” apps, registry tweaks and unofficial driver packs usually do nothing measurable, and some cause problems. Flashing a modified card BIOS can permanently damage the card. If a tweak promises a big jump with no downside, be skeptical.
Quick comparison of the main methods
| Method | Difficulty | Cost | What to expect |
|---|---|---|---|
| Driver update | Easy | Free | Fixes and game-specific gains |
| Lowering in-game settings | Easy | Free | Often the biggest immediate gain |
| Upscaling | Easy | Free | Large gain in supported games, some softness |
| Cleaning and airflow | Easy to moderate | Free or low | Steadier clocks, lower temperatures |
| Undervolting | Moderate | Free | Cooler, quieter, steadier performance |
| Overclocking | Moderate | Free | A few percent |
| Resizable BAR | Moderate | Free | Varies by game |
| Repasting | Hard | Low | Lower temperatures on older cards |
Frequently asked questions
Can I increase GPU performance without overclocking?
Yes. Drivers, in-game settings, upscaling, and cooling usually give bigger and safer gains than overclocking does.
Is overclocking a GPU safe?
Modern cards have temperature and power limits that protect them, and small, tested increases are generally low risk. Instability, heat, and warranty terms are the real concerns. Undervolting is usually the gentler option.
Why is my GPU usage low while FPS is also low?
The most common cause is a CPU bottleneck. A frame rate cap, V-Sync, or a game that doesn’t use the GPU well can also do it. Check CPU load per core in a monitoring tool.
Does more VRAM make a card faster?
Not by itself. Extra memory matters when a game runs out of it, which causes stutter. Below that point, it makes little difference.
Useful resources
- NVIDIA driver downloads
- AMD driver downloads
- HWiNFO for monitoring load, temperature, and power
- MSI Afterburner for fan curves, undervolting and overclocking
- Display Driver Uninstaller for clean driver installs
- GPU-Z for checking card details and Resizable BAR status
- Unigine Superposition for before-and-after benchmarks
- NVIDIA’s Resizable BAR guide
- AMD FSR 4 developer page
Final word
Start with the monitoring check. It tells you whether the GPU, the CPU or hea,t is the real problem, and that decides which of the sections above is worth your time. Most people find a clear improvement before they ever touch an overclock slider.
