Lag is when you touch icons and the device OS moves slow to open up the app.
My 6s Plus is very very quick. Much quicker then my iPhone 6 was.
No safari reloads
No app reloads.
Phone is super fast with no lag.
The 2GB of RAM was a Godsend
Will the Plus version just always be underpowered?
Bring it back. You may have a defective product. The longer you keep it. The worse it may get.I moved from an iPhone 6 to a 6S+. I notice on the new 6S+ that after the phone wakes, the first app I try to open can take a while. It is a noticeable second or so of no response, and then it will open quickly. Likewise, if I try to move from one screen to another there is a delay, where the screen acts as if it is frozen. This isn't really a problem but it worries me because I never experienced anything like it on my previous phone, and I hope there is nothing wrong with my device.