IMO The main issue with the 810 is that it cant receive Russian satellites- the other models can. So in areas of poor or obscured satellite reception (valleys, mountains, forests) the 810 is more likely to loose sat reception and freeze.
I run my other units GPS-only and none of them were as crashy as the 810.
@Spares started
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IMO The main issue with the 810 is that it cant receive Russian satellites- the other models can. So in areas of poor or obscured satellite reception (valleys, mountains, forests) the 810 is more likely to loose sat reception and freeze.