Okay, since I don't know if the generated crashlog folder gets sent onwards to you guys, I'll report it here. When I was looking around at simulations, and went to the all star types grid simulation, it started lagging very badly. I attempted to turn off labels to reduce the lag, which didn't help and the application quickly went to a quasi-crash state where it didn't go 'not responding' but it was responding at a glacial pace. Had to force close it with task manager.
The report.ini has nothing in it, but not sure if I should include it or not. Also, one of the solar system sims (maybe more than one?) generated an error spam.