I have a Radion R9 280 video card which I have been trying for ages to get Vegas to use for rendering, I use the Mainconcept avc/aac codec to render and even when I click on check GPU on the system tab in the render properties it says opencl is available and yet it still insist on using the CPU, even when GPU rendering is seleted.

The CPU is a 8 core AMD 8350, not that it should make a difference.

Maybe I am not using the best codec anyway, my Camera is a JVC that outputs 1920x1080 but only in Interlace which is a bit annoying.

I am considering getting better camcorder in the new year.

Anyway, if anyone have any ideas why my GPU is not being used on rendering then please let me know.