I wanted to know if this is normal for the 9500ix.
I have my RD set on highway mode with GPS filter off.
I also have my RD with the Pilot speed setting which gives my MPH.
Here's the question, when I go under an overpass or go through a tunnel, MPH on RD goes to 0, as soon as the RD sees the sky I get my MPH back.
Just wondering if this is normal despite the fact my GPS filter is off, I read a thread and it said something about even though the GPS filter is off it's not necessarily off, don't know how true that is, please inform.
Thanks For Reading.
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