There are a few things.
First the Software Update Manager is no longer working since a Windows Update Months ago. Does no difference system is Windows 7 or above.
I hope that you can fix this.
Than there is a feature missing for capturing gameplay sound and recording a microphone at the same time as mix.
There is a Option PAL_720p/1080i that is not useable. Roxio Game Capture always switch back to NTSC_M (i am using PAL Gaming Consoles)
OBS - Open Broadcaster Studio can Capture much better Video Quality than the Game Capture Software why is this so ?
And can you please tell us the right settings for capturing with best quality ?