I've historically played ONI on Mac with no issues. I last week purchased a new Surface Pro 6. The game's performance is spotty. Sometimes the Surface Pro 6 with Windows is faster than my older iMac. The app loads in less time, for instance. But sometimes ONI has unplayable lag. And it sometimes locks up.
I can predict the lockup by noticing the terrible lag. Another indicator is the resource list will flicker on and off. At that point I usually try to save the game but it is too late. The game won't respond to clicks anywhere. Soon after Windows will report the app is unresponsive and ask if I want to kill it.
I found and followed the troubleshooting instructions on the support site. My Steam installation has been validated. And this system is fresh. It has only Steam and Microsoft apps. What else can I try?
Steps to Reproduce
This happens about 30% of the time just by playing the game. But the indicator of a coming lock/crash is a flickering resource list.
This issue has not been confirmed by a developer yet.