DataGrid Grouping Performance

[Chumba]

Hi All,

Hope I can find some help for an issue I've been running into. I was able to reproduce it using the demo app so this should be easy to demo locally. When working with medium sized (500+ rows) data sets grouping in the datagrid is incredibly slow to scroll etc..

I was able to reproduce this in the demo app by increasing the amount of Albums in SampleData.Albums, when testing with grouping this is extremely slow. When removing the groupDescription from the MainViewModel constructor the grid scrolls as normal, very fast.

Any tips & tricks? I've been fighting this for ages. Thanks so much