Kendall80

I've used an X-T10 for a few years and was thinking of upgrading to the X-T20. One thing I noticed when trying one out is that the EVF flickers every time that AF is used - I understand that this is down to the aperture rapidly opening and closing. This doesn't appear to happen on my X-T10 - the aperture just snaps open and closed. Is there any way to get the X-T20 to work the same way, or at least reduce this issue?