You've got it set to 100 right now, but you say it does that even with just a value of 1?
It might be because you don't have a GPU. I'm pretty sure Tao runs on the GPU and the Intel Iris isn't really a dedicated GPU. You'd need an AMD or NVIDIA card.
Yes even at a value of 1 the same problem occurs.
I think you must be right. The old Mir worked fine so ill re-install that if i can and see if it works.