Hi KoroKara, thank you for taking the time to report this bug!
When the app does crash, and it shows the alert "Do you want to share additional data with the developer", could you add a little comment saying something like "This happens with 10k tabs"?
This will help us sift through the crash reports and review yours specifically.
This would be extremely helpful to narrow down on the udnerlying issue and hopefully find a good fix quickly.
Thank you for your help in making Orion a better browser!