Web browsers are often the silent culprits of a slow startup. Even if you disabled the browser itself, it might be running "background apps."
Alternatively, you can also use the Task Manager to manage startup apps: stop apps from opening on startup
“Why,” she said aloud to the empty kitchen, “does every app think it’s the most important thing in my life?” Web browsers are often the silent culprits of a slow startup
Here is how to take back control and stop apps from opening on startup on every major platform. stop apps from opening on startup