Restart the laptop regularly
Close unused apps and browser tabs
Disable startup programs
Uninstall unused software
Update the operating system
Update device drivers
Keep antivirus software updated
Run a malware scan
Free up disk space
Delete temporary files
Use an SSD instead of an HDD
Add more RAM
Set power mode to high performance
Reduce visual effects
Keep the laptop cool
Clean dust from vents and fans
Use the laptop on a hard surface
Check for background processes
Disable unnecessary browser extensions
Keep software updated
Defragment an HDD if applicable
Reinstall the operating system if needed