I’ve just submitted a fix for UE-17458 (Unreal Engine Issues and Bug Tracker (UE-17458))
Pull Request here: https://github.com/EpicGames/UnrealEngine/pull/4584
Fixing UE-17458 bug - YouTube](Unreal Engine Issues and Bug Tracker (UE-17458))
With the fix, there’s a new “Use Full Precision Instance Stream” option in ISMC detail panel (Advance Property), by checking this option on, full precision vertex array will be used instead of half float. (To solve the seam issue between instances due to lack of precision)
