React slow on wsl on windows

Found a reason here why is almost impossible deal with a react app on wsl. 

My repo is located in a windows folder, everything is slow, even using npx. 

If you need things fast, move your folder for inside a native folder on the wsl, a linux filesystem. 

If I try 

npx create-react-app app 

In a windows folder, it takes ages to complete and npm start after that is very, very slow. 

If I try the same commando on the /tmp on wsl, everything is fast.