7-Speed Automatic and A/C

Eighties Meta

I have a 2009 370z that I bought used a few days ago and I have a question on something I've observed over the commute back and forth to work. It's been smoking hot so I've had the A/C on constantly and I obviously recognize that this will impact performance but it's not the performance or pushing it that worries me it's the fact that I find it rather difficult to drive just putting around on my daily commute with the A/C on. It's like I'm not pushing on the pedal hard enough and it's jumping up into the gears too quickly. Is this normal? it literally feels like I'm in 7th gear doing 40 mph. Obviously I can compensate by manually shifting down via the paddle if I need to be in a lower gear for a bit of time but just in general it's really bothersome being so "boggy" feeling. I hope this is just me not being familiar with driving it yet. Anyone experience this initially and change something about how they drive it?

Thanks
Kevin