Set ThreadPriority on main scene thread to highest.

This will only have an effect on Windows systems or mono with the (not recommended) mono-3.2.8 debug patch https://gist.github.com/justincc/31e52218d098529b4696 applied
Make outboudn and packet inbox handling threads highest priority.

Will only have any affect under Windows or mono with a patch such as https://gist.github.com/justincc/31e52218d098529b4696 (not recommended) applied.
For assessment purposes.