Huawei MediaPad T5 10 problem with gaming

[Unouervo879]

I using that tablet from December 2018 and I didnt have problems, but one day I had update of Android 8.0. I dont remember that I accepted the update, but when I woked up, the systhem was updated, and then I realized that games working badly. Especially stick disappears on 5 seconds with lag when I playing FIFA or PES MOBILE. Since that I had 2 or 3 updates of systhem, but that not working. I made hard reset, but its not working too, like developer options (Force GPU, 4x MSAA, Open Skia rendering module etc.) . So its problem with EMUI or processor? Im playing without apps working in the background. Processor of that device is HiSilicon Kirin 659.