I was surprised at your speed test result because whenever I use ABB's speed test utility it shows me the exact speeds I'm supposed to be getting: 110/5. It's only when I use a different site's speed tester that I see results which match the slowness I'm experiencing at the time, which almost all of the time is somewhere around what your speed test shows.
I hope you eventually get a resolution to your speed issue. I've given-up on any resolution to my speed issues and unfortunately I'm forced to use ABB by my condo association.