Rolling cache in msfs 2024

Some questions about rolling cache.
How does it behave when it reached the maximum size set? Will it oberwrite with new data?
After updates like SU1, is it necessary to delete the rolling cache file to get the new updated data instantly?
The main thing is i have lots of space for rolling cache. I could set it to 500gb. But is it better? Or does it even prevent the sim from streaming updated data?
Cheers and thanks

There seems to be no easy answer to those questions.

If you or anyone else wants to take a deep dive into it, here’s a thread that has an amazing amount of rigorous research into the topic. I confess to not understanding some of what he/she discusses, but I will give him/her credit for giving us good summations at the end of every post.

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