this is just a foto example to better understand. Rig used in this case was freedom360.
i think other APV User will have the same problem, because if i watch your other examples on this website, sometimes you will see it also in the rendered video. I have tried it also with other Hero3 black edition cams, same settings, same version etc. (if i watch the video from the gopro its clear, the stand alone video, it's sharp! The rendered version with unsharpness. Even on a fix point, or if i move for example with the bicycle.
I have this Problem with APV first edition, like also with the new beta 3. Have someone a work around; regards.
Some comments: - the input video are quite high resolution ( 1440p most of the time with gopro H3/H3+ in 6 gopro rigs ). So that's 1920x1440 pixels. - Most of the rendering is done is full HD ( 1920x1080 ) for the whole sphere. So that's already a huge downsize between input and output.
If you want to keep the same number of pixel between input and output, you need to render at 5.4 K which is the native resolution of what you recorded in fact.