Timing off with Fuji Xt1 and Godox v860C
Picked up a pair of Cactus v6 mkII today.
Setup was pretty simple, manually set the TX to Fuji, set the RX to Canon -> 860v.
All was working fine, using Forced HSS, I was able to shoot in HSS mode. Every once in a while at 1/4000 I would get a slight gradient. I realized I hadn' done the "Learn HSS" timing step. Once I did that, HSS won't work at all. Basically I fire the camera in Forced HSS mode and the flash fires ~.5 seconds after the picture is taken and of course the frame is black.