Not at all. I'm trying with legion expansion. I'm using ubuntu 19.10 and playonlinux 4.3.4 with wine 5.3 (x86), and selected windows7 as OS. I did install mscorefonts and gecko libraries. The game stuck in loading screen. I'm still looking for a solution...
For the virtual drive folder you can go to: home>PlayOnLinux's virtual drives>"Drive Name">drive_c
If you can't see "PlayOnLinux's virtual drives", try checking the "show hidden files" option in the files manager and then go to: home/.PlayOnLinux/wineprefix/"DriveName"/drive_c