Dear giancarlo.vasta,
For #1, Please refer to below link.
https://devtalk.nvidia.com/default/topic/1031778/faq/nvidia_drive_px2_time_sync_guide/
For #2, Coudl you please file a bug for this request?
Please login to https://developer.nvidia.com/drive with your credentials.
Please check MyAccount->MyBugs->Submit a new bug to file bug.
Please share ID here to follow up. Thanks.