I haven't. I actually forgot about it as I finally got the system to stop freezing. However just this week I encountered another freeze. Can't get to it tonight but I'll try to see if it's still posting those to the log tomorrow.
Things I've done since though that may have changed things - updated the nvidia driver. Updated the gpustat addon. Turned on iommu in the bios (that was a pain to find) and passed through the GTX 950 to plex docker for transcoding.
I have no idea what the lockup was about this time but it had been up over a week this time.