Hi, I had the same pb, i find that there was 4MB BrowserMetrics-*.pma files generated every 10 or 15s in this folder:   /volume1/@appstore/SurveillanceStation/local_display/.config/chromium-local-display/         Like me you're in a virtualized environnement with no GPU pass-thru so this is maybe why it is happening.. I don't know.   The solution is to STOP LOCAL DISPLAY service in Surveillance Station's application center.    
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