Im stripping wallpaper off ceiling but its becoming a nightmare the underlay of the wallpaper is sticking to ceiling. Whats the best an quickest way to strip the wallpaper without it becoming a long and tedious task?

Get a pro to do it! Dry strip whatever you can then get a garden sprayer and soak with soapy water

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Professional Kitchen & Bathroom Fitters | Master Painters and Decorators | Brighton & Hove

I take it youve tried a steamer, what are you going to finish the ceiling with, ie paint it,?
If you paint it, every little bit of paper and glue would need to come of.
Myself personally, I would over board and skim, if its as difficult as you say, I know this is over kill, but I can board and skim an average sized ceiling in a day, and it sounds like its taking you longer to strip it.
If you had most of the paper and glue of, you could Feb-Bond/Blue Grit it, then skim.
Whatever you decide the ceiling must originally have been in a poor condition, for some one to have paperd it.

Use a perforator on it, spray with water, let it soak and it should come off quite easy.
Pray they didn't put extra PVA in the paste because thats a nightmare.

Oh and get the radio on, it's a crap job but a bit of planet rock can do wonders.

Then when it's done wash with sugar soap and easifill any knackered bits.