Hi Rick,
I think all would agree that something that takes 5 minutes in ArcMap should probably take 5 minutes or less in ArcGIS Pro. So there is something going on that needs to be investigated.
I think that Michael's idea of working on this with technical support is a good one as there could be many factors at play.
I was curious to see if this is a "generic problem", meaning that it could be reproduced with any data. I created a random raster of 52 miles X 32 miles and cell size 61 meters (about 200 feet). I also created 1000 random points and ran Sample in ArcMap and ArcGIS Pro.
Results:
ArcMap = 1.36 seconds
ArcGIS Pro = 1.22 seconds
I don't think there is anything inherently slower about this operation in ArcGIS Pro. But it would be valuable to investigate the specific performance issue you're experiencing with technical support so that we can understand what's happening.