problems with amount of time to change image in slideshow

Hi Kodi guys.

I am having trouble with setting “Amount of time to display each image ” . When i disable the Use pan and zoom effects ” option, it will change every 5*N times. (example: i set “amount of time to…” to 10 and it will change every 50 seconds measured with a clock).

If i enable “Use pan and zoom effects ” and then set “amount of time ..” to N seconds, images in a slideshow will change every 9*N seconds (example: i set “amount of time to…” to 10 and it will change every 90 seconds approximately).

I don’t know what’s causing it. I’m confortable right now with the pan and zoom effects activated and the “amount of time..” set to 5 (changes every 45 seconds approx.)

But it isn’t supposed to work like that, right?

My setup:
Kodi 17 (latest stable build as of today), Estuary, Raspberry pi 2B

Any additional info please respond.
Thanks!