It could be due to a variety of reasons, but some of the most common are:
1. Overheating: When your graphics card gets too hot, it will automatically slow down to prevent further damage to the hardware. This can occur when your computer is not adequately cooled or if the thermal paste between the graphics card and the heatsink has worn out. To address this issue, you should ensure that your computer’s cooling system is running properly, and apply new thermal paste if necessary.
2. Outdated Drivers: Graphics drivers are designed to improve the performance of your video card. If your drivers are outdated or corrupted, however, they may limit your card’s performance or cause it to run slower than normal. To fix this, you will need to update your drivers to the latest version available.
3. Hardware or Software Conflicts: If you recently installed a new program or piece of hardware, there is a chance that it may be conflicting with your graphics card. To resolve this issue, you should check to make sure that all of your drivers are up to date and uninstall any recently-installed programs that may be causing conflicts.
4. Overclocking: Overclocking increases the power of your graphics card by increasing its clock speed. However, if you overclock too much, the increased heat generated can cause your card to throttle its performance and run slower than normal. If you have overclocked your card, you may have to reduce the clock settings to bring it back to its original speed.
5. Faulty Components: In some cases, components on your graphics card may become worn out or damaged, resulting in decreased performance. To determine if this is the case, you can use software to monitor your graphics card’s temperature and performance. If the temperature or performance suddenly drops, you may need to replace certain components.
6. Power Supply: The power supply is responsible for providing power to your graphics card. If the power supply is not powerful enough, it can cause your graphics card to run slower than usual. To find out if this is the issue, you can either check the manufacturer’s requirements for your graphics card or invest in a more powerful power supply.