Got through the intro, started driving, then it crashed to the desktop.
Event viewer says...
Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: forza_x64_release_final.exe (25856) consumed 10793562112 bytes
Edit: Restarted PC, got through 89% of the first proper race before it crashed again with the same error...
Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: forza_x64_release_final.exe (14936) consumed 10872569856 bytes
That's almost 11 gigabytes ??
Core i7-4790K @ 4 GHz
16GB RAM
GTX 970
Edit 2: Seems I had my virtual memory set to a fixed size of 5GB
Let's see how we got on, now that I've set it to System Managed.
Edit 3: All is right with the world once again ??
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To everyone who is getting a crash after the splash screen: This is a common problem even with the original game, you can fix it like this:
Open Windows Store
Start downloading any app (like FB Messenger) and cancel it right after the download starts
Run the game again, it will work now.