Well,
this is what it is all about.
It is about the effects of the crystal boundaries in grown graphene sheets used in semiconductor devices. The conclusion of all this is that there is no significant effect.
If there was, there were be no way to test this specific effect on equipment under test.
So, after much pressery on the nettery, and deep thaukus, there is no screechy tweetery, or woofery fluttery. That is the fundamold. (With acknowledgement to the late Stanley Unwin.)