When I launch the Infinite flight it loads to the menu (or just before it) and then it crashes.
GPU: GTX 970
CPU: i7 6700k
The Halo Infinite Technical Preview is now offline, but will return on the evening of September 30th [PT]. A specific time has yet to be announced. There is no need to delete or uninstall your build.
If this persists after the flight has gone live again, please refer to the known issues list on https://aka.ms/HaloSupportInsider and submit tickets for issues not present.