Unity Projekt is opening after a long time and is not big??? (4h or more)

Hey Guys,
my first Videogame is not pretty big and my Hardware is good!
For some time ago the Projekt is opening fast and with no Problems.

Idk what I can do pls help…

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Sorry my English is not the best… but thank you for every help.

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Kill the Unity process, open it again. Every now and again the asset database gets indefinitely caught up on something.