Using slideshow on Apple TV (Gen 3) it doesn't work!

I had to buy the new Gen 3 as my old one (which worked fine) became outdated

It will not play a slideshow properly either on random play (dont repeat) it repeats or date order it plays a few then repeats them.

The only reason I bought it was to show the photos on my TV.

Really not impressed

There are only 300/400 photos in each album and I have full fibre wifi