I don't know where the OP is geographically, but assuming the UK or Europe or even North America without A/C, and given the current weather, I'd go with what a couple of others have said and assume something's overheating.
Odyssey stresses both GPU and CPU like you wouldn't believe (
FS2020 is the only thing that gets even close on my PC) and unless you're in an air-conditioned room the temperatures go up like a rocket. I've recently replaced the liquid cooler in my PC so it's about as efficient as it's ever been but it still struggles in the extremes of a UK summer. The best cooler in the world is only as good as the environment it's venting into, and my office was at 27.5°C the other day with the window open. Some of the graphics on the
FS2020 menus started glitching just downloading updates. I wouldn't even risk running
Odyssey when the temperature is like this.
Obviously mileages vary and there as many theoretical possibilities for the cause as there are machines out there. But in my experience I'd suspect, and to some degree hope, that it's just something temporarily cooking. The two times I've seen something like this that
wasn't immediately heat-related, it turned out the GPUs were actually dying. Temporary overheating is much cheaper to fix.
