An interesting question. Many users of iPad Pro, regardless of screen size, might be asking this question.
Here are just some of the more recent discussions on this topic - specifically complaining about freezing screen input and periodic unresponsiveness...
https://discussions.apple.com/thread/8588201
https://discussions.apple.com/thread/250021992
https://discussions.apple.com/thread/8396370?answerId=34214121022&page=1
The problem appears to affect all the iPad Pro models, some users suffering more than others. The issue is obviously more noticable with App that require intensive screen touches - such as when scrolling through screens, or when typing longer passages of text.
Nobody, yet, has found a definitive fix or reliable workaround. Apple don’t appear to have admitted to existence of a fault - despite considerable numbers of complains. Many contributors here, that have had their iPads replaced with refurbished devices, have frequently commented that the symptoms are unresolved or return.