In short, I have been having real issues with translating MRA routes into the route on a Garmin XT2.

I have created routes in MRA using HERE maps with plenty of shaping points. I have copied them across from my iMac directly. The route in question is 233 km. MRA says the route will take 3:30. The Garmin calculates it as nearly. 4:30. It looks like the same route on the route preview. It’s not the first time I have had issues with this. Earlier today the Garmin just made up its own route. When I realised that something was amiss and check the route on MRA we were some 15km off the route and the Garmin had just given me this route.

Am I doing something totally dumb or have I potentially got a dodgy XT2.