Whenever your Dell computer is performing slowly, you can try these troubleshooting steps:
Make sure you restart your PC regularly.
You can also run a hardware diagnostics test on your computer to know what is causing it and how you can fix it.
You can also use the Dell Support Assist to optimize your PC.
And lastly, limit the startup programs in your PC.
By performing these steps you can prevent the slow performance of your Dell PC. If you have any technical problems you can call Dell customer care.