Vi Auto attack reset

Okay so I wanted to try out vi since her new patch, she seems REALLY buggy with Titanic hydra and her E I feel like damage isn't applying as it should.

I thought man what a great combo for vi, Q E Hydra E well it doesnt' quite work that way. In fact she like stutters and looks like shes having a siezure. In fact if you do it to fast I think you can cancel The hydra cast. It's really weird.