Projects often just need to add an ARM64 configuration to build, the biggest questions being about binary dependencies and assembly. With Visual Studio 2017 15.9+ and Windows SDK 3.0, ARM64 Win32 is fully supported (no WindowsSDKDesktopARMSupport even). I tried again and couldn't notice the difference again.

Seriously, when I started it a few minutes ago typing was just slightly slow to render.

The idle loop takes ~0.2% CPU, but I tend to leave Notepad++ running.

Notepad++ is a wonderfully light application, so the benefits of native ARM64 support are simple: There's a solid argument for not doing the extra work to support another architecture, though I see 圆4 hasn't been out of the question. There is also a wide variety of compiled plugins available for it.

I use the x86 ('32-bit') version of Notepad++ on a regular basis on a Windows 10 on ARM device, and it works very well.

While I'm filing this feature request as a long-time fan of Notepad++, please note that I'm also a Microsoft software engineer whose day job is expanding the Windows 10 on ARM (ARM64, both Win32 and UWP) software ecosystem.

Notepad ++ windows 10 64