Larry,
Thank you for doing that. Yes, most of the patches render fine. This came up for me first, so I was curious to know if it is my system or rendering issues with BIAB.
Seems like it is rendering issues with BIAB. And I suspect "shuddering" issues during a playback is related.
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Fiddler, thanks for trying. I re-checked license, everything up to date. Even done all the maintenance on soft e-licenser, including memory cleanup. No, it is not related to GM mode or registrations. I tried Halion 6 as VST in BIAB and even a default patch (hexagon synth) had same shuddering issues.

While I am typing this, I came up with something...For testing purposes I can try to run Sonic as a standalone and connect to BIAB through LoopMidi. I think that will shine a light on the whole situation.
P.S. I am pretty confident shuddering will not occur. I should have some time around lunch to check this, so will post back.