If you don’t speed control anyone, and don’t use defender. it is normal with or without netCut. as netCut will not send any craft packet to control network.
and yes. if you remove netcut. everything will resume back to before you install netCut.
you can uninstall netcut by one of two option
1. Goto windows setting –> remove program –> uninstall netcut
2. goto c:\program files(x86)\arcaic.com\ and run unins000.exe
after uninstall, you will see netCut_windows.exe and aips are deleted and no longer run in your system. there are some setting files ie your saved hostname and device offline schedule and history. if you keep those, next time when you install netcut, it will pick up the setting. you can also safely remove whole folder of arcai.com . in this case, next time when you install netCut. unless you have arcai login or google sign in, you will start all over as first time user.