Display screen recording/overlapping growing FPS than the alternative

Enjoying Battle Thunder Cellular and i’ve this concern the place everytime theres one thing within the display screen like a notification or display screen recording ongoing my FPS improve from 40-45 fps to 60-70 fps and that is actual FPS not a visible bug within the FPS counter and that i requested chatgpt, stated it's an influence saving concern however none actually works even when i unrestricted the sport. Is there any apps or technique the place i can absolutely throttle or absolutely use my GPU or CPU in in any case?