1) at 100% zoom, I count about 5 seconds to scroll from first to second page by holding the arrow-down key
2) at 180% zoom, I count about 18 seconds to scroll from first to second page by holding the arrow-down key
2b) at 180% zoom, a two-pages text-only document takes less than 2 seconds to scroll from first to second page by holding the arrow-down key
3) cpu is not occupied by any other program
1) at 100% zoom, I count about 5 seconds to scroll from first to second page by holding the arrow-down key
2) at 180% zoom, I count about 18 seconds to scroll from first to second page by holding the arrow-down key
2b) at 180% zoom, a two-pages text-only document takes less than 2 seconds to scroll from first to second page by holding the arrow-down key
3) cpu is not occupied by any other program