FPS drop to 5-10 after a match begining.

When I start the game, I can navigate the main menu without any issues. You can check the FPS value in real-time from the top left corner. However, as soon as I enter any match (this happens in all game modes), the FPS drops to 5-10, making the game unplayable. Even after exiting the match, the FPS never recovers in any of the menus. My graphics card is an Nvidia RTX 3050Ti, which should be capable of running the game smoothly. My game settings are at the lowest.