Do you know your result is not relevant to the reality? We have 56 on gtx 1080 ti with pill for ETH and 730 for Equihash.
How are you getting 56 on 1080Ti? I only get 36 on my "regular" 1080's with the pill. They have the same memory... What are your power limits and clocks? A 1080 should
at most be 30% slower than a Ti.