I followed the setup and it seems that ProcessGroup is working since the cache files are isolated per account. However, I tried creating php.ini and .user.ini to test and it doesn't apply the local configs.
You can follow our per-user php.ini setup, if you use cagefs, make sure the php.ini will be created inside user's cage.
.user.ini does not work with lsphp, you can use php_value in .htaccess for that purpose.
