Will export 20GB database cause a loss of application speed?

Hi Ansgar, we have to make a backup of our 20GB database. Will the export function in HeidiSQL cause a loss of application speed while creating the backup? Do you know how long it will take with attached settings? Thanks in advance.

You mean, the application may get slower after the export? Or during the export?

I'm just exporting three databases here as a test, summing up to roughly 20 GB, like yours. I see the export gets unnecessarily slow on certain tables, likely due to too large chunk processing. Apart from that, I have no issues.