No. The Smartsupp script loads asynchronously, so it doesn't slow down the loading of your website. All Smartsupp elements together are 232 KB and take about 350 ms to load on a broadband connection.
We've broken the article into a few sections:
Smartsupp script load time details
Smartsupp chat script size is 184 KB. Size of all Smartsupp elements when loaded is 232 KB and it takes 350 ms to load on a broadband internet connection. The script is asynchronous so it doesn’t slow down the loading of the website. You can see script load details here:
What's next?
How to use Smartsupp with Content security policy (CSP)? — what to allow in your Content Security Policy for Smartsupp.
Supported browsers — browsers and versions that work with Smartsupp.
What’s the difference between Smartsupp and Google Analytics? — why visitor numbers in Smartsupp and Google Analytics differ.