Restart your computer regularly
Close unused programs and browser tabs
Uninstall apps you do not use
Disable unnecessary startup programs
Update your operating system
Update your drivers
Scan for malware and viruses
Free up disk space
Delete temporary files
Empty the recycle bin
Use a solid-state drive if possible
Add more RAM if needed
Reduce visual effects and animations
Keep your desktop uncluttered
Defragment a hard drive if you use one
Check for overheating and clean dust from vents
Use a lightweight browser or fewer extensions
Reset or reinstall the operating system if needed