> At least but not at last Electron apps are so slow to start and so hardware-hungry I actually doubt it is going to become a truly mainstream platform for desktop applications

Nobody is going to write a Photoshop or a music production software in Electron. You need C++ for that kind of stuff. Neither PyQt or WinForms cuts it. Apps like that use custom GUIs built directly over OpenGL/Direct3D.

But I have a feeling your app is no Photoshop either.