Restart the PC regularly
Uninstall unused programs
Disable unnecessary startup apps
Close background apps you are not using
Update Windows or your operating system
Update device drivers
Scan for malware and viruses
Free up disk space
Delete temporary files
Empty the recycle bin
Use an SSD instead of an HDD
Add more RAM
Lower visual effects and animations
Set power mode to High performance
Keep the system cool and dust-free
Defragment an HDD if you use one
Reduce browser tabs and extensions
Check for failing hardware
Reinstall the operating system if needed