Installing Fallout 4 broke other games

  • I received Fallout 4 for Christmas and installed it through Steam. I fired it up and found I'm getting

    Game FPS Engine
    Fallout 4 (Steam) 7-9 Creation
    Subnautica (via Epic Games Launcher) 4-5 Unity
    AC Odyssey (Steam through UbiSoft Connect) 60 AnvilNext 2.0
    Portal 2 (Steam) 60 Source
    Elder Scrolls V: Skyrim (Steam) 7 Creation Engine
    Stellaris (Steam) 55-60 Clausewitz
    Kerbal Space Program (Steam) ~5 Unity Engine
    No Man's Sky (Steam) 60 Modified Unity

    My first thought was an engine problem, since it is affecting both Fallout and Skyrim and they're both on the Creation Engine but Subnautica and KSP are on Unity, so that doesn't explain it. It FEELS like a library problem, like the install of Fallout overlaid a (possibly older) copy of something on top of the current version? Is there something that is used by both Unity and Creation that could account for this kind of behavior? Or maybe it configured the OS to use... something it shouldn't be using?

    So far I have:

    • checked Windows Updates (I'm up to date)
    • updated video drivers (Nvidia GeForce RTX 3080 -
    • uninstalled and reinstalled all copies of MS Visual C++ (2008, 2010, 2012, 2013, 2015-2022)
    • checked for updated dll's by file modification date of the Fallout 4 install: none
    • checked for all updated files by file modification date of the Fallout 4 install: umpteen, but none seem like likely candidates (I can get the list if someone thinks it might be useful)
    • uninstalled Fallout 4, Subnautica still broken
    • reinstalled Subnautica both with and without Fallout 4, still broken
    • cranked all in-game (FO4) video setting to the very minimum, although given the strength of the box and video card, it should be playable at high everything

    I have noticed that, in FO4, if I am indoors and looking at the ground, I can get as high as 25-30 FPS. But if I step outdoors and look at... anything, I'm back to 4-5.

    Any thoughts or suggestions?

    Nvidia System Information

    Operating System:   Windows 10 Home, 64-bit
    DirectX version:    12.0 
    GPU processor:      NVIDIA GeForce RTX 3080
    Driver version:     497.29
    Driver Type:        DCH
    Direct3D feature level: 12_1
    CUDA Cores:     8704 
    Resizable BAR       No
    Core clock:     1710 MHz 
    Memory data rate:   19.00 Gbps
    Memory interface:   320-bit 
    Memory bandwidth:   760.08 GB/s
    Total available graphics memory:    18397 MB
    Dedicated video memory: 10240 MB GDDR6X
    System video memory:    0 MB
    Shared system memory:   8157 MB
    Video BIOS version:
    IRQ:            Not used
    Bus:            PCI Express x8 Gen4
    Device Id:      10DE 2206 38911028
    Part Number:        G132 0030


    nvui.dll NVIDIA User Experience Driver Component
    nvxdplcy.dll NVIDIA User Experience Driver Component
    nvxdbat.dll NVIDIA User Experience Driver Component
    nvxdapix.dll NVIDIA User Experience Driver Component
    NVCPL.DLL NVIDIA User Experience Driver Component
    nvCplUIR.dll 8.1.940.0 NVIDIA Control Panel
    nvCplUI.exe 8.1.940.0 NVIDIA Control Panel
    nvWSSR.dll NVIDIA Workstation Server
    nvWSS.dll NVIDIA Workstation Server
    nvViTvSR.dll NVIDIA Video Server
    nvViTvS.dll NVIDIA Video Server
    nvLicensingS.dll NVIDIA Licensing Server
    nvDevToolSR.dll NVIDIA Licensing Server
    nvDevToolS.dll NVIDIA 3D Settings Server
    nvDispSR.dll NVIDIA Display Server
    nvDispS.dll NVIDIA Display Server
    PhysX 09.21.0713 NVIDIA PhysX
    NVCUDA64.DLL NVIDIA CUDA 11.5.125 driver
    nvGameSR.dll NVIDIA 3D Settings Server
    nvGameS.dll NVIDIA 3D Settings Server


    (not sure what is and isn't relevant)

    System Information
          Time of this report: 1/3/2022, 18:24:15
                 Machine name: PIGPEN
                   Machine Id: 
             Operating System: Windows 10 Home 64-bit (10.0, Build 19042) (19041.vb_release.191206-1406)
                     Language: English (Regional Setting: English)
          System Manufacturer: Alienware
                 System Model: Alienware Aurora Ryzen Edition
                         BIOS: 2.2.4 (type: UEFI)
                    Processor: AMD Ryzen 7 3700X 8-Core Processor  (16 CPUs), ~3.6GHz
                       Memory: 16384MB RAM
          Available OS Memory: 16314MB RAM
                    Page File: 10506MB used, 11439MB available
                  Windows Dir: C:\Windows
              DirectX Version: DirectX 12
          DX Setup Parameters: Not found
             User DPI Setting: 96 DPI (100 percent)
           System DPI Setting: 96 DPI (100 percent)
              DWM DPI Scaling: Disabled
                     Miracast: Available, no HDCP
    Microsoft Graphics Hybrid: Not Supported
     DirectX Database Version: 1.0.8
               DxDiag Version: 10.00.19041.0928 64bit Unicode

  • Follow-up: I gave up and punted. After trying upgrading to Windows 11, reinstalling DirectX 12, multiple version of drivers and validating OpenGL, none of which helped, I backed everything up and reinstalled Windows from scratch. This seems to have done the trick. Thank you to everyone! I really appreciate your suggestions. Plus now I know a lot more for next time. Yay?

    And to anyone having the same issue who came here looking for help, sorry.

    "I say we take off and nuke the entire site from orbit. It's the only way to be sure." - Ripley

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