Developer's Hosted Tokenization Iframe is slow to load (~4s). Is the Prod version faster?

I'm developing my application to use the Hosted Tokenization iFrame to enter card information. In development, the iframe on esqa.moneris.com takes around 4 seconds to display its content! That a very poor user experience!

I'm wondering if the Production version is also going to be that slow? Do you have any performance targets to share for Production?

Thanks.