A lot of crashes seemed happen at the Porsche Curves. Drivers trying a bit too hard thanks to the new run-off? It was kind of pleasing to see actually since there was talk that the corner was no longer challenging...
In TV the new Porsche Curves didn't look as bad as at least the bitumen was painted to look like sand. Also, when comparing onboards from 2017 and 2018, the actual track lines, kerbs and the already existing run-off seems to be unchanged.
2017:
https://youtu.be/6fNtWuFf-ZM?t=174
2018:
https://youtu.be/z1urzkGIAEM?t=181