Big companies like to use ticket rate closure to rate staff, but doesnt difference tiers for tickets. And, the low performers will cherry pick the easy tickets that can be quickly closed. Or more often people wont solve the harder tickets, to keep up their ticket stats in the monthly stats.
Doctors offices have this problem now too, they have a ETA for each patient, ran by the insurance or corporate heads, and a few late people or big problems can throw off the entire day.
I've seen this problem on installers and contractors, HQ gives an alloted time to complete a job, but they have no idea what the onsite setup is like, lots of issues can pop up.
I had this one Boss fire an IT guy, for not completing a remote datacenter job quick enough, the IT guy drove to our datacenter in a new office, and the site was brand new installation, there was cardboard boxes, wire and metal bits all over the the server room, so he cleaned it up. Got fired for not being quick enough.
This will just make people do "just enough", race towards the bottom of quality.