SharePoint Designer – stop that lag when loading
SharePoint Designer (SPD) by default loads the last site you were using when it opens. I know this is a “feature” and has it benefits when you are working on one site, but I find myself realising that its opening the last site and frantically clicking the stop button in hoping that it will stop loading swiftly.

You can turn this feature off, select Tools > Application Options
You will be presented with the following
De-select the first option and click OK.
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