September 2019
Why not do it like in battlefield 5, have slider for FPS limit, 30 and 60 wont do it. It's the same engine so I dont see any problem with implementing it.
Further details:
https://www.youtube.com/watch?v=xsXFUVYPIx4
I tried this*, but it does not work in the new game, and just made it hella buggy.
*https://www.reddit.com/r/PvZGardenWarfare/comments/3omt16/how_would_you_lock_the_game_to_30_fps_on_...