React navigation loading freeze on heavy component

Question

I have a problem with React Native navigation (Expo Router). I have a slow loading (initial rendering) component on one of the screens and every time I move to that screen, the app freezes before transition, waits a second and then transitions alright. Lazy loading solves transition problem, but interface become unresponsive for the same amount of time after transition and that's just unacceptable. Does anyone have any suggestions?