The newest builds broke Sonic Adventure 2 Battle

[Pimenov]

The newest builds released about a month ago caused the game Sonic Adventure 2 to run twice slower. Why?
Redmi Note 9 Pro, Snapdragon 720G.
On builds from last summer that game was fast.

[JosJuice]

If you can find the exact build where it started running slower, I can attempt to explain why that build made it slower.