KoroKara thanks for following up. Good to see it's working better for you.
You're right, there's probably still some areas we can improve when it comes to better supporting large numbers of tabs. If you do find a reliable way to reproduce a crash, please do create a new ticket with details, and even a crash report. This would be extremely valuable.
To share a crash report, Go to Settings → Privacy & Security → Analytics & Improvements → Analytics Data, scroll to the files starting with Orion, tap the one matching your crash time, then tap the Share icon to save or send it.
Thank you for your help in making Orion a better browser!