QGLWidget crashes program when the window is resized rapidly

[Lima]

Did you ever figure out the issue? I'm using PyQt5.5 with Python 2.7 and I'm having a similar issue. When I resize the QOpenGLWidget window, it crashes or slows down the painting quite a bit.

Unfortunately not. I eventually got frustrated and made the window a fixed size. Would still very much like to know the solution if you have better luck than I did.