Description of the Issue

When I exit the latest Notepad++, or save a configuration change, there's a long pause due to unbuffered writes.

Steps to Reproduce the Issue

1. Start Notepad++
2. Exit Notepad++

Expected Behavior

It should exit almost instantly.

Actual Behavior

It spent 0.7 seconds writing a 10kb config.xml in thousands of small, unbuffered increments.

I saved a log from the SysInternals Process Monitor showing the exit activity:
NPPexit.zip

Debug Information

Notepad++ v8.1.7 (32-bit)
Build time : Oct 15 2021 - 01:17:20
Path : C:\Program Files (x86)\Notepad++\notepad++.exe
Command Line :
Admin mode : ON
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 7 Professional (64-bit)
OS Build : 7601.0
Current ANSI codepage : 1252
Plugins : mimeTools.dll NppConverter.dll NppExport.dll NppTextFX.dll