Check for your Auto-Attacks man. Any second you spend looking away from the dummy is 1 potentially an auto-attack you could lose... in 3mins, 180s, that's 180/2.88 = 62.5 AAs. If you spent 4s in total looking away from your target, 180-4 = 176 / 2.88 = 61.111 AA's instead.

Also, no one can actually judge or "fix" your rotation just by looking at a number you're spitting out and ilvl. If you want people to actually check what's up, post a video of you on a dummy.

One more thing, food/pots are not taken into account for the SSS dummy checks. If you're unable to clear it without food/pots, then you're not ready to clear it.