Please let me know if you need more information.

EDIT: OK, looks like it runs fine now. I did a DISM /restorehealth command on the administrator command line and then restarted, and now Steel Gear works as expected. Weird; I guess something in Windows 11 was corrupted. Now if one could do something to make my computer run about 10 degrees cooler while the game is running (it goes to 90-100 deg C while running Steel Gear in-game)...

Oh, my new computer specs:

Lenovo Legion Pro 5

13th gen Core i9 -13900HX, 2.2 GHz, 24 cores, 32 logical processors
Windows 11 Home 64-bit 22H2

32 GB main RAM

Nvidia GeForce RTX 4070 Laptop GPU (8 GB VRAM)

DirectX12

Game resolution used: 1024x768

I had rescued Ellen and was on my way back to talk to the good Doctor Pettrovich for a second time, and was just passing by the outdoor area where a few dogs attack from the clearing to the east. Right after I finished kicking them down, the game screen went completely black, though the music continued. No sound effects occurred after that, either. I couldn't even right-click on the taskbar tab for the game to close it; I had to "end task" from the Windows Task Manager, which said the Steel Gear process was not responding (despite the music still going).

I don't think I mentioned this before, but including all my prior reports as well, I've been playing in windowed mode with resolution 1152x864, on a 1920x1080 laptop screen. Other in-game graphics settings I'm using:

VSync: off

FPS: Unlimited

View distance: high

The remaining graphics options below that are all set to medium.

Side note: why the heck haven't I been playing in 1600x900? It fits on my screen just fine, and is bigger so I can see more and the submenu options aren't crammed together.  I really didn't spend enough time getting the resolution just right...

Edit: I may have found an explanation for the graphical problems I've been having. I noticed that Task Manager was showing my CPU at ~37% and my GPU up around 75% usage while Steel Gear is running. Just on a hunch, I checked my CPU temps. Sure enough, they were in the 80-100°C range for all 8 CPU cores. So it's possible that my laptop's running into heat/thermal issues when running the game, which may affect the graphical stability.

Unfortunately there is a bug, which makes it unplayable on 21:9 monitors. 

The bug is -starting a new game and if you switch to the weapons menu, the HUD / UI is overlaping the "close" button for exiting the menu.

Is there a workaround? 

Pressing ESC does not work, neither switching to a non 21:9 resolution. 

I really like your game, and want to play it. Here is a screenshot for better understanding what I mean. https://ibb.co/P4000td