Hi,
Thanks for the reply.
Other programs I usually run are Firefox browser, Thunderbird email, Discord, Twitch and Steam. There's occasionally random other programs running but those listed are basically always open.
Frequency of crashes is hard to tell as they are so random. If I have to put a figure I would say maybe 3 - 4 times a year.
I do run Xsyon in full screen mode at 1920x1080 resolution. Game graphics are set quite high as well.
My wife who plays Xsyon as well has the same computer as I do and I think she has had one instance of this error. We've been using these computers since Dec 2018.