Precomputed light

hello, I have a question … Now I’m trying to solve the problem with precomputed calculation of the light (for playing on a mobile phone), when the level is loaded, it can be seen that the textures change color after a second and become normal, I tried to do as here https: //docs.unrealengine .com / 4.26 / en-US / BuildingWorl … but everything remains the same … how can this problem be solved?

P.S
I did Delay for 6 seconds before loading the level, but the fact is that the player can move through the sub-levels in real time, and when the camera enters another location, the light is loaded in the same way after a while. Setting a black screen and Delay and at the moment the player moves to another sub-level is not an option, since you need to preserve the effect of the character (and camera) movement.
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For me it was the solution to remove this daw in the project settings