Nuvi 755T Slow Map Response

There has been a lot of discussion over ecoRoute and what it does and doesn't do. The general consensus is it is and was a marketing gimmick that wasn't ready for prime time. Many of those upgrading their units to have ecoRoute have downgraded for some of the same reasons you are noticing - slow response. Other issues are significant changes in routing.

EcoRoute is set to seek roads where a speed of 40-50 miles per hour can be used. If there is a limited access highway with a speed over 50, the ecoRoute will not use it and favor surface streets where a maximum speed is 50 or lower. This change, and the extra processing the unit has to do to calculate your "mileage" over tax the processor so it cannot keep the map refreshed.

The general remedy is to call Garmin and get the instructions on how to remove that update and revert to the latest without ecoRoute.

Sometimes updates do more harm than good.

I love ecoroute. Not for the routing, which is a gimmick, but for the logging feature. Every trip gets logged to a CSV file with date, start time, start location and destination locations (lat/long as well as English descriptions) and distance. It's brilliant for anyone who submits expense reports for miles driven.

i am a realtor, goverment is alway wondering about my high miles for the year at tax time, now, i just print them off, it appears that i have been short changing myself by alot!!1

I use Eco Route for the same function. Don't know why but I have not noticed the rewrite issues that some have. Having the log file saves me an hour of work a week logging stops and miles