First of all, when you test a new hardware setup, you de-power the board using the VESC-Tool profiles.
go for 12Km/h and maybe 30% power. Ride in a place where you can safely test things our.
That is common sense and we advised to do so.
A carbon fibre deck will definitely block the radio signal. You need to place the dongle outside of the CF enclosure. CF or metal enclosures shield the signal.
The time, you will have the last signal lasting is the TIMEOUT setting. After X milliseconds of signal loss the VESC will go into failsafe mode. That could be free rolling or a mild brake (when defined). If your signal is stable and tested, you can use a faster TIMEOUT.
However, we don’t want a unstable signal and therefore it is advisable to place the transceiver in a location with no signal blocking.