BSOD CRITICAL_OBJECT_TERMINATION ntoskrnl.exe after ~1 hour of uptime

my computer will still boot as windows boots from my ssd for faster startups.

Good, that's what we want. I would suggest getting rid of the Active 100MB partition on the Mechanical drive then. It may save you some problems later. Good luck with the computer eng., that's a great job. But, you're right. Most work arounds are just that, work arounds and sometimes aren't easy or pretty, but they work. When you become an engineer, remember what us grunts in the field have to do to make things work. Keep in touch and let us know if the update fixes everything.

Great to hear that. I hope it continues for you and I hope you will stick around. There are some of the best computer people on the internet here and it is almost limitless what you can learn. If you have any more problems, we'll always be here. If I can help you with anything, feel free to contact me. Good luck.