A few days ago I tried firing up BF6 after not playing since December 2025, and I've encountered constant full-system PC freezes. BF6 ran perfectly fine without any crashing prior to my hiatus. I am unable to complete a single match, and the freezes typically occur within minutes of a match, or even at the loadout firing range. When the freezes occur, audio stops completely (no looping audio), whatever is on my monitor at the time is frozen, and the PC does not respond to any input from the keyboard or mouse (num lock toggle light does not toggle). The PC stays this way until I hold the power button to perform a hard restart. I can leave it like this for minutes and nothing occurs. System temps remain perfectly cool even when the lockup occurs. I've taken a considerable number of steps to try and resolve this issue. In no particular order:

Disabling MFG
Re-enabling MFG
Disabling XMP
Re-enabling XMP
Removing my graphics card undervolt and returning the GPU settings to default in MSi Afterburner
Re-activating my undervolt.
Dropping the settings all the way to low in the game
Trying to play the game full screen instead of borderless window
Video driver rollback
Video driver update
Full video driver removal via DDU in safe mode without networking, followed by a video driver clean install with a pre-downloaded Game-ready WHQL-certified Nvidia driver directly from Nvidia's website (latest version) while my ethernet cable was unplugged and wifi was disabled. This also includes total removal of the Nvidia app and I've tried the game before reinstalling said Nvidia app as well as after it's been reinstalled.
Overriding exploit protections for both the game executable and Javelin
2 clean installs of the game and Javelin
Clearing the shader cache
Boosting the heck out of my fan speeds
Disabling the Realtek PCIe 5GbE adapter on the motherboard (suspected a driver conflict)
Updating BIOS to the latest version
Setting ALL BIOS settings to default
Disabling ALL of my hardware monitor software
Disabling ALL overlay software
Setting a static image to the MSi Dynamic Dashboard III AND turning the LCD off (More on this below)
Uninstalling NoMachine (suspected virtual USB devices)
Disabling/fully quitting Cisco AnyConnect (It wasn't in use while I played but I still wanted to be sure)
Uninstalling the Oculus software (multiple errors in event viewer pointed to the Oculus service. Obviously this was not the cause because I'm writing this message). 
Moving the install folder to a non-boot drive
Moving the install back to my C drive
Yes, secure boot is enabled. 

None of these resolved the issue.

Event viewer's only critical errors are Event ID 41 (Kernel-Power), which occurs because I'm holding down the power button to do a hard reset. No other damning evidence in the event-viewer. 

System specs:

Windows 11 Home version 25H2
MSi MEG X870E Godlike
AMD Ryzen 7 9800X3D (No OC)
64GB G.Skill Trident Z5 DDR5 RAM @ 6400MT/s (when A-XMP is enabled) (This memory IS on the motherboard QVL and I am NOT mixing kits)
MSI RTX 5090 Vanguard SOC, normally running an undervolt + 200MHz memory clock boost. Like I said I've tried the game after disabling the undervolt and memory clock boost. 
Seasonic Prime TX-1600 3.1 ATX 5.1, with the GPU connected using the native 12V-2x6 with sense wires. 
Installed on a Samsung 990 Evo Plus, and a 990 Evo Pro. Both report good drive health in Samsung Magician. 

Regarding the note about the Dynamic Dashboard III, there was a fairly common issue with this motherboard where the Dynamic Dashboard would cause intermittent USB disconnects unless the image was set to static and the LCD was off. For many people (including myself) this ended up being resolved when they released a firmware recovery tool in September last year, and I haven't had the issue since. I only mention it because when I perform the hard resets the Dynamic Dashboard III's display remains on, regardless of if I'm using it as a system monitor, static image, or short animated .gif of my parrot bobbing her head. 

I should also note that BF6 is the literal only game this occurs in. I can run War Thunder, Cyberpunk 2077, Skyrim, Deus Ex: Mankind Divided, FFXIV, MechWarrior 5 Clans, Monster Hunter Wilds, and more all at max settings with all the RTX bells and whistles and at 4K and they run with no issues for as long as I want to play them. Yes, I know none of these are EA games. I'm merely including them to try and highlight that the issue is specific to BF6.

Any insight would be appreciated, but please read all of the steps I've taken first. I didn't write all of these details only to be asked if I've tried disabling my overclock or updating my BIOS.