During the weekend, I've benchmarked 3760 vs 3490 FW for GPS precision during navigation. With open sky and full signal, 3760 has an accuracy ranging between 5-9 meters. In the same conditions and itinerary, 3490 FW accuracy was much worse: 15 - 30 meters. My unit is equipped with PBC V8.
Such "low" accuracy makes GPS navigation very unreliable. For the moment, I will stay 3460 FW + TurboCCC patch for 3790 features hoping for future development to improve the situation.
Regards,
Rodrigo