If you use Samsung Phone with Android 11, you must to activate "Focus on Power Saving" on game booster+, that's will increase about 4fps and more stable
Phone's spec:
SoC : Exynos 7885
CPU : 2 × 1,56Ghz Cortex A73 + 6 × 1,4Ghz Cortex A53
GPU : Mali G71 MP2
RAM : 3GB LPDDR4
ROM : 32GB eMMC 5.1
Osu! Lazer Lag Fix Increase FPS on Osu Lazer