Rather than revert back again to 5.0.0 after failing with different ffmpeg options, I decided to use an AI suggestion that is close to fifo, but doesn’t use it. The gifs seem comparable but are a little smaller byte-wise. I guess I’ll call this a solution since I’m tired of messing with it.
GIF Out Options
-r 2 -filter_complex scale=480:-2:flags=lanczos,setpts=0.5*PTS,split[o1][o2];[o1]palettegen=max_colors=128:stats_mode=diff[p];[o2][p]paletteuse=dither=bayer:bayer_scale=3