Very good Navi with small performance problems

Navigation-very good, quality good to very good, support good to very good, logical menu good to very good (but significant familiarization of the older devices), display good to very good, cards for life very well, updates to the computer after first understanding the procedure very well, voice control rather moderate-I use them only rarely. My main criticism is the performance of the device. Booting from the off state takes almost 1 minute, until the device is connected to the TomTom services take again 20-30 seconds. One can, of course, greatly accelerate if it is allowed to stand in the sleep mode, but it means increased power consumption. For me, the most annoying snail's pace if I want to report speed changes. Changing example of 100km / h is displayed in the device to an actual 70km / h zone only 300m-400m long (like the transition from highway to the village) you can not create quasi because just the menu for too long placed to call for will. Wanted to TomTom times still write "be noticed" exactly when the GPS data ...