My 205W was experiencing
severe display lag for the last few weeks or so. The refresh rate was about 1 sec, and always lag between 1 to 2 seconds even though my speed was around 80 - 90 km/h on highways. At roundabouts, my vehicle icon is still in the roundabout even though I've exited!
My initial thoughts was that the latest maps were more detailed and complex even though it is still less than 40MB, hence the lag. When I loaded it with earlier maps and went driving around, the lag was still very pronounced. I then suspected it was the GPI files in the nuvi \POI folder... so I deleted ALL of them (I actually moved them to my PC), and removed my SD card.
Just now, during one of my weekend drive-arounds, I think the display lag issue apparently disappeared. The screen refresh rate was definitely faster. That made me wonder if it was the GPI files in the \POI folder after all. It gave me the frights when I still got voice alerts on speed traps! I could swear that my \POI folder is empty! and Dr. Nightmare was not selected either.
Later [just now] I realised that I had earlier created another folder [\tempFiles] that also contained several GPI files including the SpeedTrap file. Seems that the nuvi not only read from the \POI folder, but anywhere else in the memory
... Can anyone verify this?