Best posts made by hanskiefer

@flaviu2 Thanks for testing!
I made a clean reinstall of Opera, and it worked ok at first. When I added uBlock Origin (extension), it went slow again. Unfortunately, deactivating the extension for linkedin.com didn't bring it back to speed. Tested the same in Firefox, also with uBlock Origin, and there was no issue at all.
A bit sad, as Opera has been very stable for many years in my experience. I hope, this will remain a singular issue with this domain only.

@flaviu2 OK, I think I found it: deaktivating the native ad blocker in Opera solved the problem. Maybe it was a stupid idea to have 2 ad blockers running simultaneously, but I never encountered problems with other sites. Anyway, problem solved, thread can be closed for my part. Thanks, @flaviu2 !