When using Omnitapps4 to run a configuration, it's good to make sure other applications and functions don't interfere with the user experience.
Check your Windows "Power & Sleep" settings and make sure the "sleep" and "turn off screen" options are set to "never". Also turn off the Windows On-screen keyboard (Omnitapps uses it's own on-screen keyboard and if you go to an external browser it's better to use an extension for the browser). Suspend the windows updates and uninstall any unnecessary applications to minimize the chance of unwanted pop-ups.