[Development] QTBUG-43096 - QML instantiation performance decadence

[Uwe Rathmann]

Hi Simon,

> I ran benchmarks comparing a release build of 5.12 against 5.1.1 and ran
> the benchmark mentioned in the task, where Qt 5.12 came out in average
> faster by a factor of 4.

Christophers comment in the JIRA ticket raises some questions concerning 
the correctness of those benchmarks.

Would you be so kind to clarify how far we can trust in these numbers ?

Uwe