Very slow text update in the editor on win10

{noformat} Qt 5.13.2 (i386-little_endian-ilp32 shared (dynamic) release build; by MSVC 2017) on "windows" OS: Windows 10 (10.0) [winnt version 10.0.17134] Architecture: x86_64; features: SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX Environment: Features: QT_NO_EXCEPTIONS Library info:   PrefixPath: D:\Qt\Tools\QtCreator\bin   DocumentationPath: D:\Qt\Tools\QtCreator\bin\doc   HeadersPath: D:\Qt\Tools\QtCreator\bin\include   LibrariesPath: D:\Qt\Tools\QtCreator\bin   LibraryExecutablesPath: D:\Qt\Tools\QtCreator\bin\bin   BinariesPath: D:\Qt\Tools\QtCreator\bin   PluginsPath: D:\Qt\Tools\QtCreator\bin\plugins   ImportsPath: D:\Qt\Tools\QtCreator\bin\imports   Qml2ImportsPath: D:\Qt\Tools\QtCreator\bin\qml   ArchDataPath: D:\Qt\Tools\QtCreator\bin   DataPath: D:\Qt\Tools\QtCreator\bin   TranslationsPath: D:\Qt\Tools\QtCreator\bin\translations   ExamplesPath: D:\Qt\Tools\QtCreator\bin\examples   TestsPath: D:\Qt\Tools\QtCreator\bin\tests   SettingsPath: Standard paths [*...* denote writable entry]:   DesktopLocation: "Desktop" *C:\Users\User\Desktop*   DocumentsLocation: "Documents" *C:\Users\User\Documents*   FontsLocation: "Fonts" *C:\WINDOWS\Fonts*   ApplicationsLocation: "Applications" *C:\Users\User\AppData\Roaming\Microsoft\Windows\Start Menu\Programs*   MusicLocation: "Music" *C:\Users\User\Music*   MoviesLocation: "Movies" *C:\Users\User\Videos*   PicturesLocation: "Pictures" *C:\Users\User\Pictures*   TempLocation: "Temporary Directory" *C:\Users\User\AppData\Local\Temp*   HomeLocation: "Home" *C:\Users\User*   AppLocalDataLocation: "Application Data" *C:\Users\User\AppData\Local\QtProject\qtdiag* C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag   CacheLocation: "Cache" *C:\Users\User\AppData\Local\QtProject\qtdiag\cache*   GenericDataLocation: "Shared Data" *C:\Users\User\AppData\Local* C:\ProgramData D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data   RuntimeLocation: "Runtime" *C:\Users\User*   ConfigLocation: "Configuration" *C:\Users\User\AppData\Local\QtProject\qtdiag* C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag   DownloadLocation: "Download" *C:\Users\User\Downloads*   GenericCacheLocation: "Shared Cache" *C:\Users\User\AppData\Local\cache*   GenericConfigLocation: "Shared Configuration" *C:\Users\User\AppData\Local* C:\ProgramData D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data   AppDataLocation: "Application Data" *C:\Users\User\AppData\Roaming\QtProject\qtdiag* C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag   AppConfigLocation: "Application Configuration" *C:\Users\User\AppData\Local\QtProject\qtdiag* C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag File selectors (increasing order of precedence):   en_US windows winnt Network:   Using "OpenSSL 1.1.1c 28 May 2019", version: 0x1010103f Platform capabilities: ThreadedPixmaps OpenGL ThreadedOpenGL WindowMasks MultipleWindows ForeignWindows NonFullScreenWindows NativeWidgets WindowManagement RasterGLSurface AllGLFunctionsQueryable Style hints:   mouseDoubleClickInterval: 500   mousePressAndHoldInterval: 800   startDragDistance: 10   startDragTime: 500   startDragVelocity: 0   keyboardInputInterval: 400   keyboardAutoRepeatRate: 32   cursorFlashTime: 1060   showIsFullScreen: 0   showIsMaximized: 0   passwordMaskDelay: 0   passwordMaskCharacter: U+25CF   fontSmoothingGamma: 1.2   useRtlExtensions: 0   setFocusOnTouchRelease: 0   tabFocusBehavior: Qt::TabFocusAllControls   singleClickActivation: 0 Additional style hints (QPlatformIntegration):   ReplayMousePressOutsidePopup: 1 Theme:   Platforms requested : windows             available : snap,flatpak,xdgdesktopportal   Styles requested : WindowsVista,Windows          available : windowsvista,Windows,Fusion   System font : "MS Shell Dlg 2" 8   Native file dialog Fonts:   General font : "MS Shell Dlg 2" 8   Fixed font : "Courier New" 9   Title font : "MS Shell Dlg 2" 8   Smallest font: "MS Shell Dlg 2" 8 Palette:   QPalette::WindowText: #ff000000   QPalette::Button: #fff0f0f0   QPalette::Light: #ffffffff   QPalette::Midlight: #ffe3e3e3   QPalette::Dark: #ffa0a0a0   QPalette::Mid: #ffa0a0a0   QPalette::Text: #ff000000   QPalette::BrightText: #ffffffff   QPalette::ButtonText: #ff000000   QPalette::Base: #ffffffff   QPalette::Window: #fff0f0f0   QPalette::Shadow: #ff696969   QPalette::Highlight: #ff0078d7   QPalette::HighlightedText: #ffffffff   QPalette::Link: #ff0000ff   QPalette::LinkVisited: #ffff00ff   QPalette::AlternateBase: #ffe9e7e3   QPalette::NoRole: #ff000000   QPalette::ToolTipBase: #ffffffdc   QPalette::ToolTipText: #ff000000   QPalette::PlaceholderText: #80000000 Screens: 2, High DPI scaling: inactive # 0 "\\.\DISPLAY1" Depth: 32 Primary: yes   Manufacturer:   Model:   Serial number:   Geometry: 1920x1080+0+0 Available: 1920x1080+0+0   Virtual geometry: 3840x1080+0+0 Available: 3840x1080+0+0   2 virtual siblings   Physical size: 345x194 mm Refresh: 59 Hz Power state: 0   Physical DPI: 141.357,141.402 Logical DPI: 120,120 Subpixel_RGB   DevicePixelRatio: 1 Pixel density: 1   Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0 # 1 "\\.\DISPLAY2" Depth: 32 Primary: no   Manufacturer:   Model:   Serial number:   Geometry: 1920x1080+1920+0 Available: 1920x1080+1920+0   Virtual geometry: 3840x1080+0+0 Available: 3840x1080+0+0   2 virtual siblings   Physical size: 533x312 mm Refresh: 59 Hz Power state: 0   Physical DPI: 91.4972,87.9231 Logical DPI: 96,96 Subpixel_RGB   DevicePixelRatio: 1 Pixel density: 1   Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0 Dynamic GL LibGL Vendor: Intel Renderer: Intel(R) HD Graphics 4000 Version: 4.0.0 - Build 10.18.10.4425 Shading language: 4.00 - Build 10.18.10.4425 Format: Version: 4.0 Profile: 2 Swap behavior: 2 Buffer size (RGBA): 8,8,8,8 Depth buffer: 24 Stencil buffer: 8 Profile: None (QOpenGLFunctions_4_0), Core (QOpenGLFunctions_4_0_Core), Compatibility (QOpenGLFunctions_4_0_Compatibility) Vulkan instance available Supported instance extensions:   VK_KHR_device_group_creation, version 1   VK_KHR_external_fence_capabilities, version 1   VK_KHR_external_memory_capabilities, version 1   VK_KHR_external_semaphore_capabilities, version 1   VK_KHR_get_physical_device_properties2, version 1   VK_KHR_get_surface_capabilities2, version 1   VK_KHR_surface, version 25   VK_KHR_win32_surface, version 6   VK_EXT_debug_report, version 9   VK_EXT_debug_utils, version 1   VK_EXT_swapchain_colorspace, version 3   VK_NV_external_memory_capabilities, version 1 Supported layers:   VK_LAYER_NV_optimus, version 1, spec version 1.1.95, NVIDIA Optimus layer   VK_LAYER_RENDERDOC_Capture, version 2, spec version 1.1.73, Debugging capture layer for RenderDoc   VK_LAYER_NV_nsight, version 1, spec version 1.1.71, NVIDIA Nsight Visual Studio Edition interception layer   VK_LAYER_LUNARG_api_dump, version 2, spec version 1.1.101, LunarG debug layer   VK_LAYER_LUNARG_assistant_layer, version 1, spec version 1.1.101, LunarG Validation Factory Layer   VK_LAYER_LUNARG_core_validation, version 1, spec version 1.1.101, LunarG Validation Layer   VK_LAYER_LUNARG_device_simulation, version 1, spec version 1.1.101, LunarG device simulation layer   VK_LAYER_LUNARG_monitor, version 1, spec version 1.1.101, Execution Monitoring Layer   VK_LAYER_LUNARG_object_tracker, version 1, spec version 1.1.101, LunarG Validation Layer   VK_LAYER_LUNARG_screenshot, version 1, spec version 1.1.101, LunarG image capture layer   VK_LAYER_LUNARG_standard_validation, version 1, spec version 1.1.101, LunarG Standard Validation   VK_LAYER_LUNARG_parameter_validation, version 1, spec version 1.1.101, LunarG Validation Layer   VK_LAYER_GOOGLE_threading, version 1, spec version 1.1.101, Google Validation Layer   VK_LAYER_GOOGLE_unique_objects, version 1, spec version 1.1.101, Google Validation Layer   VK_LAYER_LUNARG_vktrace, version 1, spec version 1.1.101, Vktrace tracing library Available physical devices:   API version 1.1.95, vendor 0x10DE, device 0x11A0, GeForce GTX 680M, type 2, driver version 426.0.0 GPU #1:          Card name : Intel(R) HD Graphics 4000        Driver Name : igdumdim32.dll     Driver Version : 10.18.10.4425          Vendor ID : 0x8086          Device ID : 0x0166          SubSys ID : 0x51051558        Revision ID : 0x0009 GPU #2:          Card name : Intel(R) HD Graphics 4000        Driver Name : igdumdim32.dll     Driver Version : 10.18.10.4425          Vendor ID : 0x8086          Device ID : 0x0166          SubSys ID : 0x51051558        Revision ID : 0x0009 Plugin information:   Android 4.10.2 + AutoTest 4.10.2   AutotoolsProjectManager 4.10.2   BareMetal 4.10.2 + Bazaar 4.10.2   Beautifier 4.10.2 + BinEditor 4.10.2 + Bookmarks 4.10.2 + CMakeProjectManager 4.10.2 + CVS 4.10.2 + ClangCodeModel 4.10.2   ClangFormat 4.10.2   ClangPchManager 4.10.2   ClangRefactoring 4.10.2 + ClangTools 4.10.2 + ClassView 4.10.2   ClearCase 4.10.2 + CodePaster 4.10.2   CompilationDatabaseProjectManager 4.10.2 + Core 4.10.2 + CppEditor 4.10.2 + CppTools 4.10.2   Cppcheck 4.10.2 + Debugger 4.10.2 + Designer 4.10.2 + DiffEditor 4.10.2   EmacsKeys 4.10.2 + FakeVim 4.10.2 + GLSLEditor 4.10.2 + GenericProjectManager 4.10.2 + Git 4.10.2   HelloWorld 4.10.2 + Help 4.10.2 + ImageViewer 4.10.2   Ios 4.10.2 + LanguageClient 4.10.2 + Macros 4.10.2 + Mercurial 4.10.2 + ModelEditor 4.10.2   Nim 4.10.2 + PerfProfiler 4.10.2   Perforce 4.10.2 + ProjectExplorer 4.10.2 + PythonEditor 4.10.2 + QbsProjectManager 4.10.2 + QmakeProjectManager 4.10.2 + QmlDesigner 4.10.2 + QmlJSEditor 4.10.2 + QmlJSTools 4.10.2 + QmlPreview 4.10.2 + QmlProfiler 4.10.2 + QmlProjectManager 4.10.2   Qnx 4.10.2 + QtSupport 4.10.2   RemoteLinux 4.10.2 + ResourceEditor 4.10.2 + ScxmlEditor 4.10.2   SerialTerminal 4.10.2   SilverSearcher 4.10.2   StudioWelcome 4.10.2 + Subversion 4.10.2 + TaskList 4.10.2 + TextEditor 4.10.2   Todo 4.10.2 + UpdateInfo 4.10.2 + Valgrind 4.10.2 + VcsBase 4.10.2 + Welcome 4.10.2   WinRt 4.10.2 Qt Creator 4.10.2 Based on Qt 5.13.2 (MSVC 2017, 32 bit) From revision 7c61e936ce Built on Nov 4 2019 02:17:36 {noformat}