LoginSecure Custom Code: Will it slow down your website?

Due to the extension, your website will not become slower. But depending on the custom codes that you put into the extension it can increase load time. 

If you, for instance, add a lot of javascript (like 500kb = is a lot!) then you can see your performance getting a hit. But this would also happen if you would let your template load the 500kb .js file. This has nothing to do with the extension.

KB Article: https://loginsecure.eu/helpdesk/knowledgebase/view-article/95-loginsecure-custom-code-will-it-slow-down-your-website