Ok, maybe "rendering" was technically the wrong word - but it appears that we have a ~20s overhead inside Qt somewhere then :-)
I think Kaleo talked about some unfortunate interactions between how DeeModels are updated with how Qt expects models to behave. Maybe that's it... I am certain he filed a bug against Dee back in the day, but I can't dig it out for the life of me!
Ok, maybe "rendering" was technically the wrong word - but it appears that we have a ~20s overhead inside Qt somewhere then :-)
I think Kaleo talked about some unfortunate interactions between how DeeModels are updated with how Qt expects models to behave. Maybe that's it... I am certain he filed a bug against Dee back in the day, but I can't dig it out for the life of me!