@Britgirl yes, I can confirm that I did have HW decoding disabled in the player config file at the time of the segfault. Like this:
<option key="Enable hardware accelerated decoding" value="false" />
<option key="Enable GPU rendering" value="false" />
But the player still segfaults on my system. I have the linux518-nvidia package (version 515.57-8) installed, and running on a NVIDIA Quadro P600 GPU.
When you did your tests showing that disabling HW decoding prevents segfaults, which hardware and NVidia driver version did you have installed?
Thanks!