Hello, While running in qt designer we see that if no qt events are emerging from qt, the python interpreter GIL is being held continuously by pyqt. Is this true? Best regards Carl. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.riverbankcomputing.com/pipermail/pyqt/attachments/20161209/3ac00df8/attachment-0001.html>