One thing to consider is the paper.
I hope you aren't using Charmin Ultra 2-Ply .
Here is the toilet paper poll.
In the church I go to, we replaced five gallon American Standard toilets that plugged all the time.
The Toto Drake and Ultramax have worked much better than the toilets they replaced. That was a total of twelve toilets in that church.
Are you telling me you've never seen a plugged toilet in a commercial bathroom that has pressure assist?
I see them all the time.
You just need to get out more.