sv6 auto

Hey guys, new to this forum after picking up 2014 VF Commodore SV6 from pickles earlier this week. Noticed few things which I would love your expert opinion. 1. On first day, I noticed auto transmission to shudder slightly when gears going down. e.g. slowing down to stop at signals. This...

Just wondering if anyone else has had this problem (in case its common). After mild to heavy acceleration, say from 60-100, when backing off at desired speed, the auto will not upshift for around 5-7sec. Does the same when cruise control makes it 'kick down' for a hill - delayed upshift at the...