Huh. Sorry about that. EBookDroid on my 2013-era Android loaded it fine in about 1 second for the first page.

(I included the link in case anyone was interested in the quality and to prove I didn't just make up the number!)

Must be something with the program you are using. I've just opened the file on my WP10 device with ancient Snapdragon 400 and I don't see any problem with reading, scrolling etc.