I have done that and it still lags. It doesn’t lag as much, but it still lags with the FPS being 0 at most times. I mean, it doesn’t matter if it’s a smooth 60fps for me, I think it runs fine at 30.
There might not be a lot that can be done. That is actually similar to my own experience and a few others. My Phone has an Android 9.0 OS and 4GB of RAM for example, and I still regularly get 30-40 fps while in a regular area like the Forest. When traveling to other big biomes such as the Jungle/Underworld or doing events such as the Pumpkin Moon, FPS will drop a bit during those events. I usually end up with 20 FPS in those instances. To me it still doesn't make the game unplayable luckily.
I'm glad the game still feels playable to you despite being less than 30 FPS.