Is it possible to run a slideshow using FBI with an interval < 1 second? I haven't been able to find any discussion of this on any Raspberry Pi forums. Setting the -t flag to a decimal value (e.g. .2) resulted in only the first image being displayed.
The full command I ran was:
sudo fbi -d /dev/fb0 -a -T 2 -t .2 *.jpg
Note that this works as expected when I use an integer for interval:
sudo fbi -d /dev/fb0 -a -T 2 -t 1 *.jpg