If you mount the Linux OS volume under windows while it's running it can get all fucked up because the two operating systems are not chill about who's really in control. You can avoid this by keeping the linux OS on it's own volume, but putting all the user data on a separate volume, you CAN mount this under both operating systems and get good speeds under both OSs, wheras using WSL native ability to access the host NTFS system is very very slow.