This is the issue. Everyone keeps spouting the same basic troubleshooting stuff. Oh update your drivers, reinstall. That would make sense if you were having issues with the PC in general across other games. It is literally only Warframe. When I can run cyberpunk, dead space and starfield on highest settings with a 4090 with no crashes then this game should have zero issues. And it is being reported. I've seen many posts talking about increase in crashes since the newest patc
Most of these posts also say they've done all of this already same with me. I keep drivers up to date and this is a fresh install of windows 11 and Warframe. These steps are pretty obvious and most people would have done that. As far as hardware. When you've run stress tests, have zero issues on anything else it's usually safe to say the problem lies with something specifically from the game itself. Whether it's an actual game issue, settings, or something else related.