I’ve found a solution that has worked for me solving numerous crashes and issues. For those of you that are playing on medium to high end systems and getting memory related crashes that should not be related to your hardware, I’ve found it to be almost 100% due to VRAM spikes that do not show up on your hardware monitors, but will otherwise spike your GPU usage to 100%, cause the sound stuttering issue and crash, and then give you a 0xc000005 code. It’s almost always due to terrain LOD slider and huge VRAM spikes - tested this for dozens of hours now.
I play on a 12700KF, 32GB, 3060ti, 2TB nvme, 1GB fiber connection. But I was still getting these problems. No matter what the settings or changes, it still kept cropping up. A few things to keep in mind - the majority of the CTD solutions are designed to ensure your GPU is running unconstrained, while trying to stabilize VRAM usage and mitigate performance issues. That said, please be sure your system and all drivers are up to date, and that you are operating the game and GPU at the highest possible performance settings. I have set it to 60FPS maximum, but 30FPS works as well. Even with no limiter, it was fine.
I run the game on Ultra with all setting maxed out and was getting 2GB to almost 3.2GB spikes in VRAM usage. If you are running your game in less intensive environments and you are near the VRAM threshold, you are 100% going to crash when flying low, or flying into cities and regional airports. In some instances, I would even gain 1.5GB to 2.0GB spike for seemingly no reason. Just flying through clouds, or flying into canyons.
I resolved the problem by ensuring the terrain level of detail keeps the VRAM usage under typical scenarios to about 4GB to 5GB. This solved the issues immediately. JFK spiked to 7.6GB, pretty much near my maximum threshold. You want to dial in your VRAM usage when flying high up or under normal, low intensity situations to around half of your total VRAM on your card.
It is also not unusual to just see random spikes flying in the French countryside, or over Japanese islands. These spikes in VRAM would happen relatively quickly and jump about 1.7GB in VRAM. You really want to have plenty of headspace.
I am not sure why some of these updates or flying situations have caused this spike. Turning off HAGS has also seemed to keep my VRAM usage more stable than when enabled, helping to mitigate spikes. What is also strange is that the menus will also use really high VRAM, so for those crashing in menus are early into flights, lowering LOD may resolve it.
When I try to up the terrain LOD over 100, it will work well in most situations but either comes too close to the threshold or crashes the game in very large cities. Texture supersampling seems to also have the biggest effect when dealing with VRAM spikes. The other settings seem to lessen it a little bit, but nothing as severe at the LOD slider and texture samples.
So before you lose your minds and chase gremlins like I did for hours on end, try to dial the VRAM in to half your total, fly some low intensity flights, and then test it in cities and see if that resolves your issues. After updating all the world files and such, this also resolved all of my grammar.ppgmod issue as well.
Hope this helps! You may even need to turn down the LOD to like 75 if you have a 4-6GB card and want to play with higher and ultra textures 
