Please can a X950G owner do this simple Kodi test for me

I'd really appreciate it if a fellow X950G owner could run a simple test for me on Kodi. I'm currently experiencing a very frustrating issue with playback of any Widevine-encrypted internet streams through Kodi. On my X950G, I get pretty bad pixelation and video artifacts. I was hoping that the Android 9 update would fix the issue, but alas, it has not. This is fairly easily tested by creating a file and playing it through Kodi, then watching for the video artifacts.

Steps:

Create a file called test.strm and paste the following contents into it:

#KODIPROP:inputstreamaddon=inputstream.adaptive
#KODIPROP:inputstream.adaptive.license_type=com.widevine.alpha
#KODIPROP:inputstream.adaptive.license_key=https://proxy.uat.widevine.com/proxy?video_id=48fcc369939ac96c&provider=widevine_test||R{SSM}|
#KODIPROP:inputstream.adaptive.manifest_type=mpd
https://storage.googleapis.com/wvmedia/cenc/h264/tears/tears.mpd 

Copy the file to a flash drive, or to your TV directly. Add a "Video source" to Kodi, pointing to the location of the file and load it.

If you did everything correctly, Kodi should load a free DRM-protected video called Tears of Steel. Let it play for a few minutes and look out for blocky artifacts on-screen.

I should point out that the X950G isn't the only device that seems to exhibit these artifacts, but it does seem to be the worst offender I have come across. But I've noticed it on my Galaxy S10, OnePlus 6 and OnePlus 7.

Here is a video showing the corruption on my S10 so that you can see the sort of artifacts I am referring to. Timecodes in the description. https://youtu.be/RCC23Y1lxGo

Thanks in advance!