v2 ok but 1.5.4 in Rift flashes

[Kula66]

Hi,

Running v2 without issues really on the Rift, but having just installed 1.5.4, its unplayable - the entire screen flashes (appears/disappears) :(

 

Rgds,

James

 

PS> Awesome work integrating with Rift guys, flying v2 is just amazing!