Hello,
I tried to reproduce your issues. However, I was not successful. I imported several huge files to the project, zoomed, and moved around but did not witness any crashes. Could you send us your crash logs? A description about how to obtain them is in the board (Steinberg Forums). Just attach the logs to this thread, the other thread, or send me a private message. This would be a great help in identifying your issues.
Thank you and kind regards,
Frieder