Windows release build startup currently takes about 1.1 seconds before the first visible window when using Flutter 3.47.2's default Impeller renderer.
Flutter upstream issue: flutter/flutter#191860
The upstream report reproduces the same regression: Impeller is substantially slower than Skia on Windows, especially with the OpenGL ES backend and shader compilation during engine startup.
Temporary decision: explicitly disable Impeller for the Windows runner with ImpellerSwitch::Disabled. Other platforms are unchanged.
Revisit this workaround when the upstream issue is fixed and a newer stable Flutter release shows comparable Windows startup time. Validate with the Windows startup check before re-enabling Impeller.
Windows release build startup currently takes about 1.1 seconds before the first visible window when using Flutter 3.47.2's default Impeller renderer.
Flutter upstream issue: flutter/flutter#191860
The upstream report reproduces the same regression: Impeller is substantially slower than Skia on Windows, especially with the OpenGL ES backend and shader compilation during engine startup.
Temporary decision: explicitly disable Impeller for the Windows runner with
ImpellerSwitch::Disabled. Other platforms are unchanged.Revisit this workaround when the upstream issue is fixed and a newer stable Flutter release shows comparable Windows startup time. Validate with the Windows startup check before re-enabling Impeller.