Okay, can we go back to basics. You said;
I am trailing jr mc19 and under theatre view the cover views are very jerky.
Exactly which Cover Views are jerky? As you can see from my signature I use an Intel Core i5-3570K CPU which includes a HD4000 iGPU. I'm using Red October Standard as I found RO HQ dropped frames in HD definition movies on this GPU.
I just checked all the movie cover views in Theatreview, and I do get a very small amount of jerkiness in the Name view, which is the 3D single line of movie covers. The jerkiness only occurs when moving one movie cover at a time, and is really just a little shudder as the cover moves to its final position. I use that view a lot and wouldn't have even noticed it except for this thread and going looking for it. Moving fast down the line of covers shows no jerkiness until positioning the last cover. None of the other Movie Views showed noticeable jerkiness.
I also checked the Audio Album cover views and again, there is a very slight shudder in some of the movements of covers, mostly as they are rotating to a stop, or just settling to their final position. The shudder is less than I saw in the movie covers.
So where are you seeing it exactly, how bad is it, and what are you doing when it happens?
I am no pc genius but I just feel jriver mc is not recognising or utilising the graphics capabilities of the intel igpu's.
It would be great if this was true, because when they fix it I might get even better visuals on my TV!