Hello, I’ve looked everywhere for a solution — online and on Spectrum — but couldn’t find anything. I’m posting here because I’m not very familiar with the different Spectrum sections and wasn’t sure where else this should go. Since moving to 4.5 PTU, I’m unable to play the game. Star Citizen launches normally, but crashes after 1–2 minutes, before Vulkan shader compilation can finish. Every time, I get this exact Easy Anti-Cheat error: Untrusted system file (\?\GLOBALROOT\Device\HarddiskVolume5\Windows\System32\atiadlxx.dll) I tested both the latest AMD drivers and the previous version: – same crash, same EAC message on both, – the driver downgrade workaround that let me bypass this issue in 4.4 live no longer works in 4.5. As a result, I currently can’t launch Star Citizen properly at all, and if this isn’t fixed before the live release, I simply won’t be able to play. System: Windows 11 – RX 6800 XT (Sapphire Nitro+) – Ryzen 7 5800X3D. Already tried: PTU reinstall, file verify, DDU + clean driver reinstall. Issue persists. Thanks for your help — I can provide logs or screenshots if needed. small update: Just to be clear, whether I change the GraphicsSettings.json file or switch the GraphicsRenderer value from 1 to 0 does not fix my issue. I don’t think it’s related to Vulkan, because I already had the same problem on the 4.4 live version. However, I managed to solve it by updating to a newer version of my drivers. At that time, I was using DirectX.