Agree with all.
And changing LOD has the same result for me: It minimizes the issue, but doesn’t eliminate the very specific, direction-related stutter when panning 360° continuously around in external view.
What an interesting thing this is… I love Ultra terrain pre-caching, it keeps my average framerate up by a decent double-digit-percent in both PG and non-PG areas, except when it hits that stutter and MainThread chokes on itself.
I would have tested this out on DX12 mode, but DX12’s un-optimized condition right now means it has even more MainThread issues than DX11, though I do wonder if an “optimized DX12” implementation will remedy this issue.
I look forward to more DX11 and DX12 beta flightings!