for some reason changes to the octane imager settings do not affect the viewport render, however it does affect the final rendering. However changes to post processing settings (chromatic aborasion etc) do change the viewport render..... I have both the override boxes ticked in the viewport top ...

For some reason any changes to the octane imager does not affect the viewport render (eg. increasing exposure to 1000 to make everything white), even though it shows in the final render. I have checked all the right boxes but somehow I can't get it to show in the viewport.... any tips?