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Waveform chart on hidden VI becomes resource intensive

Is anyone aware of different memory management for VIs in the "hidden" (vs. the "standard") front panel state? I have a subVI that has a waveform chart on it. It acquires data and plots it in the waveform chart. There's a lot of data there, the chart history is 1024 waveforms and each one is 1/4 second of data at 125kHz. When the VI's front panel is in Standard, it's fine. When I change it to Hidden, it becomes very CPU and memory intensive, enough to bog down the entire application until it crashes. If I remove the chart, it runs fine when hidden.

 

This is in LV2013 SP1. I've had trouble getting the same result in a stripped-down VI using the waveform generator VIs. If I can, I'll post one.

 

Thanks,


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