Pre 10.0.6 I did have similar crashes in similar circumstances.
It seems that there was a “speed limit” to the skimming I could do in the browser. That was the cause of most crashes and those crashes were without consequences.
Event was roughly 800 GB of mixed media and I had, by the end, about 15 versions of the project, a half hour doc. with little effects or retimings.
I haven’t had a project that big since so i can’t compare with 10.0.7