How to Fix FPS Drops on an RTX 5090 Build
FPS drops on an RTX 5090 build often have a fixable cause. Check settings, drivers, thermals, background tasks, network conditions, and bottlenecks before assuming a part must be replaced.
Read moreA 240Hz Monitor should not cause low fps on its own, so the fix is usually in Windows, the driver, or a single overlooked toggle.
Quick Answer
To fix low fps on a 240Hz Monitor setup, enable G-Sync or FreeSync so frames below 240fps still feel smooth. Most cases clear up once these are right, and you should be back to the frames your parts are capable of.
Tuning the display itself
Once the software side is clean, focus on the display. Confirm Windows is actually set to 240Hz under Display, Advanced display, not stuck at 60Hz. If the problem only appears under heavy load, watch the temperatures and clocks, because thermal throttling can masquerade as low fps. The aim throughout is the frames your parts are capable of.
First checks for 240Hz Monitor
Start with the basics. Enable G-Sync or FreeSync so frames below 240fps still feel smooth. Confirm Windows is actually set to 240Hz under Display, Advanced display, not stuck at 60Hz. These two steps resolve the majority of low fps cases on a 240Hz Monitor, because the default Windows and driver settings are often the real cause rather than the display itself.
When it is not the 240Hz Monitor at all
Sometimes the 240Hz Monitor is a red herring. Low fps often hides a CPU bottleneck, a background process, or memory running below its rated speed. Run the RAM at EXPO or XMP, close startup clutter, and confirm the GPU sits in the CPU-linked slot before blaming the display.
FAQ
Why did low fps start after my display change?
A new display often resets a setting or adds a driver that conflicts with your game. enable G-Sync or FreeSync so frames below 240fps still feel smooth, and the issue usually clears.
Is low fps a hardware fault?
Usually not. Low fps on a 240Hz Monitor setup is almost always settings, drivers or thermals. Only suspect hardware after the checks above come back clean.
How do I know if it is thermal throttling?
Watch temperatures with a monitoring overlay while you play. If low fps appears only after a few minutes and the clocks drop as temps climb, cooling is the issue, not the display.
Work through the driver, Windows power plan and the 240Hz Monitor settings above, then verify you are back to the frames your parts are capable of before changing anything else.
