Yes it would help. Also I'd give it at least a week or so for you to get used to it. It's incredibly faster than W7 for me. It does have a different feel, but give it some time to get used to it before jumping ship.
When you're in Windows 10, you can search Cortana for "Reset this PC". From there's a button that says "Get Started". Then select "Remove Everything". It should handle the rest. If you want to keep any of your files you need to make a backup of your stuff to a separate hard drive or flash drive. Doing this reset will function as a clean install without having to go through making a bootable USB drive and installing it the "normal" way. I did this with my laptop and it worked flawlessly.