How to prevent framedrops?

My phone meets the requirements of the game but I still experienced lots of frame drops (either on FPS 30 or 60, but lesser chance in 30). Is there any way to prevent it?
I'm not sure if it's called "Frame Drop": the one second that the game freezes for a frame then goes back to normal.

These are my device specs:

Spoiler: Specs

Qualcomm Snapdragon 665 2.02 GHz
4GB RAM, 64 GB ROM
64-bit
11nm, Adreno 610 Renderer

I want to experience less frame drops as possible, partly because I record 60 FPS videos for YouTube content. I might have a terrible gameplay so I want to atleast play at 60 FPS xD

 

check the graphic settings in-game.
HQ mode can cause this on some devices, so if the game lags regularly tone down the graphics.
other settings include visibility of other player's particle effects.
i have it set to 'party members' only, the default setting 'all players' can cause massive overload in crowded farming spots.
in one of the recent updates they completely reformatted the menus, there are much more fine-tuning options available now.

running a screen recording app in the background can also cause a drop in performance. lowering the record quality can lighten this a bit.