i think there are 2 separate things :
1) stutter from graphical pc bottle necking - needs lower settings/better driver/better hardware
2) micro load pausing -pc loading new items/detail -needs very fast solid state hard drive
number 2 was my problem & spoilt my enjoyment, would be best if all these items could load into ram prior to taking flight ( I have 16Gb of ram ), any how its sorted and running nicely now
looking forward to more optimisation for VR / GPU's, I'll buy content soon too