As the title suggests, I can switch from DX11 to Vulkan just fine but Vulkan only seems to work if I'm playing in windowed mode. Switching to fullscreen mode will immediately render the game unresponsive with the game crashing to desktop within the next minute. This is on 7950X3D, 64GB DDR5 6200, 7900XTX system that is running off an SSD. I'm running all graphics settings at lowest which is "off" in some cases and the resolution is set to 4K. The game appears to be crashing by completely filling up the RAM immediately. Looking at the crash log it would also appear that the game is trying to commit ~200GB of memory, unless I'm reading into what this means wrong. Is anyone else seeing this behaviour? This is the end of the crash log: Process Memory Status: 5MB working set size, 208406MB commit size (208423MB peak), 16620MB left to commit System Memory Status: 65201MB total physical, 2MB free physical, 240117MB system wide commit limit Cloud Imperium Games public crash handler taking over... Details for StarCitizen.exe (md5=64fc101c94cbed6dcffa8f2a89973adb)... * Base of Image : 0x00007FF7A8750000 (mod), 0x00007FF7A8750000 (modc) * Size of Image : 266825728 (diskoh), 266825728 (memoh), 266825728 (mod), 266825728 (modc) * Size of Code : 104589824 (diskoh), 104589824 (memoh) * Size of Headers : 1024 (diskoh), 1024 (memoh) * Size of Initialized Data : 162215424 (diskoh), 162215424 (memoh) * Size of Uninitialized Data : 0 (diskoh), 0 (memoh) * Checksum : 0 (diskoh), 0 (memoh) Saved dump file to C:\Users\Carcl\AppData\Local\Star Citizen\Crashes\error.dmp (md5=692950da53730447d47380527339d6f8) Exception STATUS_CRYENGINE_WATCH_DOG(0x2BADFF60) addr=0x00007FFB2097F39C digest=0067917540f5acc9e1e7343af6e18d06 Run from internal: No Is fatal error: No Is reported bug: No Is GPU crash: No Is Timeout: Yes - Timeout message: Main thread considered to be deadlocked after 2 timeout(s) of 30 second(s) each! (IsLoadingUnloading = False) Is out of system memory: No Is out of video memory: No Failed to save screenshot to C:\Users\Carcl\AppData\Local\Star Citizen\Crashes\screenshot.jpg - Camera position: -0.01, 0.04, -0.01 - Camera orientation: -0.0, -0.0, 0.1 Saved cvar dump to C:\Users\Carcl\AppData\Local\Star Citizen\Crashes\cvar.dump Saved build info to C:\Users\Carcl\AppData\Local\Star Citizen\Crashes\build.info No file system.cfg found No file user.cfg found Copying game.log...