The first and simplest solution I've found (credit to u/dfgvbsrdfgaregzf) is to go to your video settings ingame, near the middle of the "Display" section and disable "Present From Compute". I'm unsure what exactly this does but from what comments on r/Doom's Tech Support Megathread it has fixed the crashes for several people.

You will no longer be able to do any resolution scaling and your game may run at a less viable framerate. To solve this you'd want to go to the "Video" section and change your Upscaler. I personally use DLSS and use specifically "Performance" mode in the Super Resolution settings. It does not allow for the best showing of the game's beautiful graphics but it does clock me at my monitor's maximum framerate consistently.

If that did not work for you or if you don't want to mess with your frames, there's another easy solution you can try instead that's worked for me and many other NVIDIA users like me. (credit to u/Jumpy89) Downgrading/Rolling back your GPU driver. For whatever reason, Doom: The Dark Ages does not like seemingly any of the latest GPU drivers no matter the manufacturer. For me (NVIDIA RTX 4070 Super) I downgraded my GPU Drivers to Driver Version 576.28

Upon launching the game you will get a popup which warns you that "Updated drivers are required."...but you can just ignore it and hit play. It doesn't actually matter

This seems to be the most widely successful way to stop the game from crashing, according to myself and many many commenters from the previously mentioned Megathread

If you've tried those two solutions and it's STILL crashing, there are two more solutions I have been made aware of but have not tried myself, so take these next two with the knowledge that these are tips from a few helpful DOOM fans on the Megathread (u/AL4M4N & u/Thomas7249) for the advice that hopefully helps if the two I've mentioned haven't already!

The first is to go to your computer's settings and turn on "Hardware-Accelerated GPU scheduling".
If you are on Windows 10/11 this can be found in your system settings.

Open your settings and then click "System"

scroll down until you see "Graphics Settings"

Then right at the top you should see this setting.

This feature gives your GPU a higher priority and allows for less latency. And of course as it says on screen you do have to restart your PC. After you reset you can set DOOM to a high performance graphics perference so it can be more prioritized and less likely to freeze. Your GPU may also have specific Hardware Acceleration settings but mine does not so I would not know.

If you've tried ALL of that and the game still crashes, the last thing you can try is manually going to your PC's BIOS menu (Pressing your PC's specific BIOS key on startup) and switching your integrated graphics (usually named Internal Graphics or IGPU) to Off. This should allow your PC to properly prioritize your GPU. I cannot show any photos because I have no idea how I'd screenshot from my BIOS menu.

Thank you for reading my guide. And another big thank you to everyone in the Megathread for providing all of these solutions. I would've refunded this game before I found these solutions! I hope I've helped solve the freezing issue for you.

Have fun and enjoy this new DOOM game without the worry of anymore forced closures and restarts