Yeah try using vmware or virtual box...or else u can run it as a subsystem too via following this tutorial : null-byte.wonderhowto.com/how-to/run-kali-linux-as-windows-subsystem-0181914/
can it slow my pc ???
Gonna one-up the other reply: try using WSL - Windows Subsytem for Linux. It even has a Kali image.That being said, you might have trouble doing the install if you can't spell "reboot" or "linux."