Peter van Westen
ADMIN
The dev version (and the next stable release) of Keyboard Shortcuts should not have that issue anymore.
I'll probably release it tomorrow.
Dev version available from:
regularlabs.com/development-releases
Pretty much any plugin and any code will have some kind of performance hit.
Stuff needs to be executed by the server and HTML needs to be rendered. So every added step in the process takes extra added time.
If that is microseconds or more, depends on all sorts of factors.
That means that you can't really benchmark stuff. It all depends on a lot of different things.
Stuff like: server specs (CPU, memory, PHP version, etc), combination with other extensions, template, how/where and how often you use it on a single page, what type/method of caching you use, etc, etc.
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