My osu! crash when im in game for like 20 minutes or so. i already trying reinstall the game multiple time, but it still doesnt work. Also my osu! lag like crazy even though im using a simplistic skin. my computer can handle osu! on 60fps. Please Help.

If an "osu! crashed" window pops up after you crash, please click on the crying Pippi and post the log that is shown here.

Otherwise, follow this guide to get the crash log from your event viewer and post that here.

OpenTK.Graphics.GraphicsModeException: Failed to retrieve GraphicsMode, no fitting configurations, error SUCCESS
場所 OpenTK.Platform.Egl.EglGraphicsMode.SelectGraphicsMode(SurfaceType surface_type, IntPtr display, ColorFormat color, Int32 depth, Int32 stencil, Int32 samples, ColorFormat accum, Int32 buffers, Boolean stereo, RenderableFlags renderable_flags, Boolean fullscreen)
場所 OpenTK.Platform.Egl.EglGraphicsMode.SelectGraphicsMode(SurfaceType surface_type, IntPtr display, ColorFormat color, Int32 depth, Int32 stencil, Int32 samples, ColorFormat accum, Int32 buffers, Boolean stereo, RenderableFlags renderable_flags, Boolean fullscreen)
場所 OpenTK.Platform.Egl.EglContext..ctor(GraphicsMode mode, EglWindowInfo window, IGraphicsContext sharedContext, Int32 major, Int32 minor, GraphicsContextFlags flags)
場所 OpenTK.Platform.Egl.EglAnglePlatformFactory.CreateGLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, Boolean directRendering, Int32 major, Int32 minor, GraphicsContextFlags flags)
場所 OpenTK.Graphics.GraphicsContext..ctor(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, Int32 major, Int32 minor, GraphicsContextFlags flags)
場所 #=zYWEyqlTxHUhmn7WHM236qZ6ooNWC.#=zfhbUMT8=(Int32 #=zB7fawpo=, Int32 #=zJsnFRmM=, GraphicsContextFlags #=z45_69Fs=)
場所 #=zMMx4GSWEA0VRHIM3zsCkRc4=.OnHandleCreated(EventArgs #=zGy1zdXo=)
場所 #=zwIUwyIgRb803mz7E4Iw7R6_KkWt8.OnHandleCreated(EventArgs #=zGy1zdXo=)
場所 System.Windows.Forms.Control.WmCreate(Message& m)
場所 System.Windows.Forms.Control.WndProc(Message& m)
場所 System.Windows.Forms.ScrollableControl.WndProc(Message& m)
場所 System.Windows.Forms.Form.WmCreate(Message& m)
場所 System.Windows.Forms.Form.WndProc(Message& m)
場所 #=z_6btY95v$Tsz969bIVaLIFM=.WndProc(Message& #=z4Ch61z0=)
場所 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
場所 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
場所 System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

YEBISU_sakamoto wrote:

OpenTK.Graphics.GraphicsModeException: Failed to retrieve GraphicsMode, no fitting configurations, error SUCCESS

Next time, make a seperate thread.

For you, Make sure your Graphics Drivers are properly installed and updated.
Also be sure you are using 32bit colors, not 16.
If none of this helps, please post your Graphics card specifications.