Crash now prevents launching game

So, let me give the background for what happened.

I have been launching the game directly from the executable for a few weeks now.

Earlier in the evening, I was about to close the game for the night so I saved and then had an idea. I turned on the console/dev mode and turned roughly 2/3 of the map into gaseous niobium at ~1111111 degrees kelvin just to watch the map/my CPU melt. Instead of hanging, the game just instantly exited to Windows. I laughed because that's about what I expected, although I decided to go back into the game to see how much RAM/CPU this 'stress test' would consume before I could reliably crash the game.

I clicked my shortcut to the executable and it hit the splash screen and then errored with the message 'An Instance of this is already running' before exiting to desktop.

Things I have tried:

Restarting Steam, Windows.

Verifying game cache.

Switching to Beta Branch and then back to Public.

Uninstalling/reinstalling ONI.

Deleting player config file.

No .dmp files were created and before I restarted, and I verified no rogue Klei/ONI processes were running.

Now for the real interesting bits:

Interestingly, I can run ONI through launching with Steam. - For my use case this is strongly not preferred, so I would appreciate some assistance.

But, when I open tskmgr and monitor the processes, ONI is actually trying to launch two instances of the game. I don't know if it's sending a call to launch another instance which then crashes both, but launching the executable directly is in fact creating double instances of the game which crashes both out.

Further, if I completely exit Steam and any background processes, and then directly launch through the executable, it WILL start the game without issue, but it will launch Steam as well, as expected. But if I close the game and then try to relaunch with Steam already open, it gives the aforementioned issue.

The executable I am/was launching is "H:\Steam\steamapps\common\OxygenNotIncluded\OxygenNotIncluded.exe"

Let me know if you need anything in addition to this.

Player.log Zodenia.sav DxDiag.txt