GeForce Experience

Hello I am having trouble preventing GeForce Experience, nvtray.exe, nvvsvc.exe and nvxdsync.exe from starting up on startup. I have tried disabling things in msconfig and I have set everything but NVIDIA Display Driver Service (unsure if it is safe to set this one) to manual in services. Has anyone else experienced this problem? I don't really want to uninstall this, as I want to use shadowplay and I like what the software does. I just don't want it to open on startup.

Edit: set NVIDIA Display Driver Service to manual after finding a website saying this was okay. Appears to have solved the problem. Can anyone confirm this is alright to do?