There's factory reset and then there is the Windows 10 Reset this PC.
These are two different resets. The first will result in a factory condition PC and when that fails you are on the phone with the maker to have them fix their factory reset system.
If you used the Windows 8 or 10 Reset This PC then you have to finish the machine setup with drivers for audio, video, LAN, WiFi and what else.
So my PC recently had like 100mb left for storage and I decided to place everything important in an external hard drive and do a full factory reset on the computer. After it was finished reseting I set it up and installed everything I needed including some games from steam. When I started playing Skyrim SE I was getting about 60FPS before and now I'm getting around 10FPS. I've tried updating my nvidia cars through the device manager and nothing has helped with performance. So I'm wondering why my games are running slow and how I can fix the problem. Thanks.