DNS Settings TTL Auto or 1 Hr

I have a few sites with Cloudflare

Under the DNS settings, some of the TTL are set to 1 hour for MX and TXT while others are set to Auto.

What does this mean?

Cloudflare’s “auto” is the best solution for almost every case; setting DNS TTLs higher only helps in certain situations where a user’s DNS is slow, but nowadays that doesn’t happen much and doing so might introduce issues where you have to wait very long for DNS changes to show up globally.

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Thanks for the response,

So if I set it to 1 hour will that increase the performance of the website compared to if it is set at Auto?

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