Game lags only during rainy weather (PC)

[reef palm]

The game mostly runs perfect, but at rainy weather the game become laggy. This behavior did not happen in any previous game.

[little crater]

ياخي اللعبة تعلق كثير عندي على البيسي حطيت الشاشة 60 hz العب قيم او اثنين ويرجع اللاق