My phone is not rooted yet. I will think about rooting but it will take me some time to read into that topic. If I root my device I definitely will tell you, but it may take some weeks.

Hi, sorry for answering late, but I wanted to test different settings for a longer time.
Cleaning cache didn't solve the problem. It may have taken a few more minutes until first crash, but nothing changed.

Now, with the newest Beta Version 42.8.2246.117704, the constant crashing got a lot better. Now it crashes about every 8 minutes and the window doesn't freeze that much before crash. I am able to restart the browser pretty quickly. Also the crashing message changed - there is no possibility to report crash anymore, just restart or close browser.
Well, maybe I can can work with that status for now but still hope the problems get fixed soon.

I'm not giving up on Opera: Actually testing the newest beta 42.8.2246.117348. I like the UI, it's fast, nothing to complain about. And then "boom!". Again. Crashing. Every few websites I load with my phone.
Any possibility to talk to Opera. I'm giving feedback in Playstore, am using this official Opera forum, am sending feedback with the in browser built in contact solution - any reaction at all. That's how you loose customers.

Even my friend with brand new Huawei p9 plus is telling me, Opera crashes constantly.
If you look through the commentaries on playstore, you will notice, we are by far not the only users having problems. Seems to be a big issue and I feel left alone by Opera. I really want to stay true on Opera, but it can't go on like that.

Same Problem here with bq aquaris x5 plus and Android 7. Since Version 42.4.2246.113571 Opera crashes every few minutes. Even the beta Version of Opera crashes regularly.

42.3.2246.113338 is fine, but I really don't like the changes in UI (every websearch opens a new tab that has to closed later). In latest "stable" Version 42.7.2246.114996 my issues in the UI got fixed but it crashes about every 3 minutes while browsing.

By the way: Loading (buffering?) videos takes up to 30 seconds depending on the length of the video. But I don't know since which version this problem appeared.