Zero off GPS and "actual" mph gauge

[RNH3]

Hey guys - real quick question - I am in my 2nd summer of a Tigez1 2017 - went out for a surf yesterday and the "actual" mph gauge went absolutely crazy. So what happened - set the surf on, speed at 10.2 - and went - the actual MPH went up to 80 down to 5 and every where in between - the engine could not handle it and it never settled down, - speed up, slowed down weird, needless to say I shut everything down and drained the tanks - called the local dealer - who suggested that we turn the master battery switch off - I did - then went out with no ballast and it seemed to fix the problem - yet - last night went for a ride - surf off or zero off off and the "actual" mph gauge went everywhere. Did not affect the ride - just concerned - cause without zero off I can't surf!

checked the GPS settings - we had 9 satellites - At work today and tomorrow. so can't play with it
any ideas? anyone see this before?

Thanks

[KoolAid]

What version of software is on the screen? Lets check there first before we dig into too far.

[RNH3]

will check on saturday - not exactly certain - thanks!

[RNH3]

Sooooooooo.... turns out user error - I had finally set up a user profile for the ballast - then turned on the surf manually - engine gets very confused! we walked back the whole thing of set up and realized this could be the issue - turned off user profile and went to surf - engine and MPH were fine! so question - if i set up a user profile is that all I have to do to surf? and not turn surf on?

thanks