Restart your laptop
Close unused apps and browser tabs
Disable startup programs
Uninstall unused software
Free up disk space
Delete temporary files
Run a malware scan
Update your operating system
Update device drivers
Use a lightweight browser
Reduce visual effects
Check for overheating
Clean dust from vents and fans
Use an SSD instead of an HDD
Add more RAM if possible
Keep your storage at least 15% free
Turn off background sync and apps
Switch to power mode for performance
Scan and repair disk errors
Reset or reinstall the operating system if needed