When casting a YouTube playlist from desktop Chrome to the Chromecast is there a limit on numbers of tracks/videos  running on the Chromecast?

If I start with Caribou's 1000 song playlist
https://www.youtube.com/playlist?list=PL4lEESSgxM_5O81EvKCmBIm_JT5Q7JeaI
Start it playing in shuffle and then Cast it, it takes a little while but a queue does get built on the TV, and in the same shuffle order (usually) but the TV queue appears to be 200 not 1000.

[Edited to add] Actually I think this may be some kind of YouTube limitation. Without going anywhere near Chromecast, it doesn't seem to be possible to turn this 1000 track playlist into a queue of more than 200. Can anyone confirm?