bug rendering realtime vst effects

Using Win 11Pro 64. I am using a realtime effect that plays beautifully, but when exporting or rendering creates many audio gaps in the recording. Any ideas?

TIA

I’m guessing that the issue is specific to this one effect rather than all real-time effects.

Demo-versions of plugins can insert spoiler-silence (every 10/20/30sec) until you part with money.

And the more the processor is doing the more likely you are to get dropouts/glitches.