Same problem.
After the penultimate update (103.0.4928.16) there was a constant stuttering of the video image when streaming video, but the sound ran well; but you could still follow the stream to some extent.
Examples:
DailyMotion.com: slight stuttering in some videos (regardless of resolution).
ardmediathek.de: slight stuttering in all videos (regardless of resolution).
Youtube.com: all videos run smoothly here (HD quality).
Stuttering is consistently present on many other sites.
The latest update has made the stuttering massively worse, the sound still works fine.
It's like a video codec or caching is causing problems...
At least based on external appearance.
System was checked, no errors or conflicts found.
However, on another laptop with a newer system, but also Opera Browser (latest version), everything runs without any problems.
System data of the laptop with the problems:
Processor Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz 2.40 GHz
Installed RAM 4.00 GB (3.85 GB usable)
System Type 64-bit operating system, x64 based processor
Edition Windows 10 Home
Version 22H2
OS build 19045.3516
Performance Windows Feature Experience Pack 1000.19052.1000.0
Opera version:
Opera One (Version: 103.0.4928.26)
Opera is up to date
Update Stream:Stable
Operating System:Windows 10 64-bit
Chromium version:117.0.5938.150