time grep -ri asfadsfadfg /home/me/python-venvs
0.79s user
0.14s system
99% cpu
0.928 total
wsl time grep -ri asfadsfadfg /home/me/python-venvs
0.83s user
0.10s system
99% cpu
0.932 total
EDIT: cleaned up and formatted the output for better visibility, reacting to your comment.
First command ran from a zsh Terminal session in WSL
Second one ran from a powershell session using the wsl "bridge" executable.
I can't make sense of your command lines (why are you passing grep to grep??), but you're comparing pure-Windows against pure-WSL? I was comparing the two of those against \\wsl$ which is the slow one...
First command ran from a zsh Terminal session in WSL
Second one ran from a powershell session using the wsl "bridge" executable.