Question for X Pro2 / XF 90mm users

I've got a question for fellow XP2 / XF 90mm users.. When using C-AF, zone AF, and 3fps continuous shooting do you notice that the EVF noticeably drops in framerate when the AF-L button is pressed and the camera is focusing? I'll also mention that I'm using back button C-AF focus.

I've had good success using C-AF with shorter lenses using the OVF but as you know, it's tough to use the OVF with the 90mm.. Just curious about this EVF behavior.

Thanks!

-Jay