I have just found a setting I had not seen before:I know what you mean. But - credit where it's due - I haven't had a random reboot on coming out of standby since the update, and it's certainly quicker at switching between the Freeview side and the Apps side.
Device Preferences
Home Screen
Optimize Home and Apps Tabs
I wondered what it did and turned it off.
The horrible Advert band seems to have gone just leaving the other cluttering bands that surrounded it.
Also
There seems to be a delay on the main Aura startup and a small delay on freeview TV startup , possibly a data clear up before launching.
The Live TV despite the delay has been much better once launched.