Validation very slow - Trados 2021

Hi everyone.

I have Trados 2021, and whenever I clicked "Confirm", it takes quite some time to complete. I have more than 10k lines in source segments so this has a huge impact on my work productivity. Sometimes it would also froze on its own. 

I have tried few methods, including uncheck the the check boxes under " After Confirming Segments Manually". I need all translation to be updated to Translation Memory.

Any idea/solution to fix this? Thanks!