Bug after one ui 8

So far the experience is good after one ui 8. But the notification panel is lagging so much, every animation is smooth except the notification panel. It got worse in one ui 7 and worsen after one ui 8. It didn't lag while in one ui 6.1. Previously in one ui 7 it lagged during full screen mode in any app but now it lags everytime whether it's in full screen or portrait mode.