Edge 1040 - severe navigation lag and rerouting problem (latest firmware)

Hello

I'm long term Garmin user,  last 10 years have edge devices for my bike racing and training.

Now I have Edge 1040 for one year, I l'm not satisfied with navigation, when I make route and I can't go in planed direction, edge is asking me if I want to recalculate, I confirm and after that I keep goojg, but it said make a U-turn...and this is so anoying, why they whant me get back on old route that I say i dont want to go?? 

And another problem is that device is laggy.

When I buy it year ago I think that this problem will be solved in future firmware updates, but it didn't

For me Garmin = Navigation, but not this time Disappointed