git difftool with visual editor takes 4.5 seconds to open next file

i configured a gui application to be used with git core.editor "vscode" , the application work perfectly as a git mergetool but it takes 4.5 second or more to switch to the next file when running 'git difftool', the issue is not only with vscode as i tried other visual code editors and all of them take long time, but the command runs extremely fast with cli based applications.

then...

i tried using git with wsl in windows and set vscode as the default code editor for git and it takes fraction of a second to switch files git difftool. both on the same machine git with wsl is very much faster with GUI than git for windows

[ ] I was not able to find an open or closed issue matching what I'm seeing, including in the git-for-windows/git tracker.

Setup

Which version of microsoft/git are you using? Is it 32-bit or 64-bit?
64 bit

$ git --version --build-options

**
cpu: x86_64
built from commit: b68812e6facef46153bdeb3d79c1b8f353b8e94d
sizeof-long: 4
sizeof-size_t: 8
shell-path: /bin/sh
feature: fsmonitor--daemon
**

Are you using Scalar or VFS for Git?

If VFS for Git, then what version?

$ gvfs version

** gvfs: The term 'gvfs' is not recognized as a name of a cmdlet, function, script file, or executable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again. **

Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit? 64 bit windows 10
```
$ cmd.exe /c ver
```

insert your machine's response here


 - Any other interesting things about your environment that might be related
   to the issue you're seeing?

** insert your response here **

### Details

 - Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other

** insert your response here **

 - What commands did you run to trigger this issue? If you can provide a
   [Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve)
   this will help us understand the issue.

insert your commands here


 - What did you expect to occur after running these commands?

** insert here **

 - What actually happened instead?

** insert here **

microsoft / git

git difftool with visual editor takes 4.5 seconds to open next file #657

Setup