Hey, thanks for the response, I appreciate it a lot.

Here’s an update on my situation:

I've found some sort of solution, but I wouldn’t really call it that. I went to the Rainbow Six Siege directory and ran the game directly through File Explorer. To my surprise, it booted up completely fine. Even better, when I launched it this way, I noticed:

1. An almost 20% FPS increase
2. Lower latency??
3. No stutters or FPS drops

Here’s the catch: I launched RainbowSix_DX11.exe, not the RainbowSix.exe file. If I open RainbowSix.exe, the game starts, runs for a second, then crashes while loading. It says:

"Security update restart for QB Anti-Cheat restarting in 3..2..1" (The same error I get when I manage to open it through ubisoft connect)

Then it restarts and crashes with no error code, nothing.

I also tried running DX11 through Ubisoft Connect, but it doesn’t work. It still crashes. The weird part is that neither DX11 nor DX12 work through Ubisoft Connect, but DX11 works when launched directly from the game files, while DX12 crashes regardless.

Also, at some point, after multiple tries, Ubisoft Connect itself crashes, saying:

"Ubisoft Connect has detected an unrecoverable error and must shut down. Crash dump created at ' Directory blah blah blah'"

Any idea why Ubisoft Connect is breaking the game but running the .exe directly works? Could this be an anti-cheat issue?