Even with the "new" version, you might encounter problems. Here are the top 3 fixes.
Smartphone navigation drains a battery in 2-3 hours. A dedicated TomTom device running this map can last 5-7 hours, leaving your phone free for music, calls, or emergency backup. tomtom maps western central and eastern europe 2gb new
Solution: The 2GB map uses higher compression, which requires CPU cycles. Try disabling "3D buildings" and "Terrain detail" in the map settings to speed things up. Even with the "new" version, you might encounter problems