Lightroom Slideshow
I am running Lightroom 6.14. I have "exported to video" (to a thumb drive with 64gigs - plenty of space) a slideshow with 218 slides + music which runs for 26 minutes. I have exported using 1080. The slideshow seems to export successfully. On playing the slideshow from the thumb drive (whether on the computer from which it was installed or another device such as a smart TV), the slideshow gets to about the last few minutes and hangs. The slideshow progress bar continues to countdown but no slides and no music. If I export to video using 720 it seems go all the way through. Can anyone tell me why LR will not run the slideshow properly when exported at the highest resolution?