1)Create a shortcut of SperAp.exe (right-click → Create shortcut) 2)Right-click the shortcut and select Properties 3)In the Target field, add this at the end: -dx11 Example: "C:\Games\SperApocalypse\SperAp.exe" -dx11 4)Click Apply and OK 5)Launch the game through this shortcut --------------------------------------------- 1) Make sure you’re using the right shortcut — you should launch the game only through the shortcut with “-dx11” at the end. 2)Run as Administrator: right-click → “Run as administrator”. 3)Disable Fullscreen Optimization: Right-click the shortcut → Properties → Compatibility tab → check “Disable fullscreen optimizations.” 4) If still not working, try launching the game with “-vulkan” instead of “-dx11” — some GPUs prefer Vulkan. Example: "C:\Games\SperApocalypse\SperAp.exe" -vulkan 5) Last resort: make sure your GPU drivers are updated, and if you use an AMD card, try windowed mode — it helps sometimes.