Was that dual Voidspire Chaos Sabo? I made that one too. Sick paper dps but adtch was seriously lacking. And it wasn’t really consistent (also seriously sub-par to Rah’Zin’s WH).
I also did make some pretty fast melee FS builds, but one’s adtch is carried but 60% converted Bat(6-6:30m build) bound to main attack and other one’s adtch is carried by SR set, and Nex and Ortus set(5:30-6m build). So I have quite a bit of experience in making melee FS builds work. But on its own melee FS is very lacking. Melee builds connousseur @banana_peel would confirm it.