first removing wall paper is NOT easy. What you have to do is to work in small sections at a time and get a mister of water and completely saturate the paper so that it comes off easier. Mist here work here mist there work there. A paper tiger is just great, it allows the water to get under neath the paper and causes all the layers to come off at once, but again, ONLY if you satuate the paper thoroughly.
Pull here, wet again, and tiger this and mist again. Its slow, but you do want to remove the layers in tact.
Just be patient and saturate the paper and use the tiger.
If too much have it done, but its labor entensive as you already know.