Kodi 17.3 on Raspbian does not show large photos?

I am running KODI 17.3 on Raspian, the only functionality is to show the slideshow on a DIY pictureframe.
Unfortunately it does not show large images (> 1MB), looks like it is a performance issue, the screen remains black. Also it does not show a single photo without slideshow mode.
I have tried Raspberry Pi 2 and 3, network mounted folders and local folders also wired and wireless network. Also changed SD cards and made several fresh installations, recently also a new version of Raspbian, all without any change.
Smaller, 10 years old photos are shown without any problem.
KODI 17.1 running on Libreelec does NOT have this problem. However I need to control the backlight of my picture frame over the PWM signal from GPIO by Wiringpi and unfortunately this is not supported by Libreelec -> so I need to run KODI on Raspbian.

Any Idea why KODI 17.3 on Raspbian is not able to show simple jpg slideshow and not even a single jpg photo if it is larger than 1MB?

Any workround possible?

Should I try KODI 17.1 (which works on libreelec) on Raspbian? How can I install older one as I have installed 17.3 by “sudo get-apt install kodi”.

I really don’t want to run two separate Pi’s behind my picture frame, one showing photos on libreelec and other controlling the backlight on raspbian.