Our '16 Sunseeker has the multifunction in dash Jensen unit. The DVD, Sirius AM/FM all work great, but like you said the GPS module is????? questionable at best..I Registered on the web site which looks like the company is in a former Soviet Union country..they have upgrades available to the map system and "supposedly" according to their web site include 3D into the upgrades...again ???
Have to get unit out of storage first, then will try their upgrade..they have slide show videos that seem fairly well done...we'll see in a couple weeks...
2016 Sunseeker 3050S
2012 Ford Edge TOAD
Blue Ox & RVIBrake
2014 - 37; 2015 - 58; 2016 - 64