290 with 14.6, aero on, I just fire up mania planet and I am away, it just works.
I use VR launcher with anything that needs specific options, TM just works.
I fire up Mania planet, I then setup rift mode from mania planet home page\options\settings\virtual reality, then select rift mode and enable, the screen then goes to the rift and I click "ok" on the RH menu, then I click play from the LH menu, then select either TC or TS to play from a 3D mania planet menu and im in, no flickering and head tracking working.