Not have playstore by default, you can download this link: Playstore or download from getapps click search & write "google play"
If you want smoother refresh rate, you can disable "battery & performance" in app management (open show all system services option) but battery is slightly more drained
You can customize kernel by using kernel by danda or d8g kernel (recommended)
Call notifications don't appear on whatsapp app, because this rom is china base (can be fixed if you enable notifications in this app)
WhatsApp warning notification may appear that accesses your contacts, so ignore it or if it can be removed (that's from security china)
Cruise: Control is focused on smooth performance and very light (great for performance seekers)