How is timing affected when using iframe for experiments

URL of experiment:

Description of the problem: I am wondering if experiment timing will be affected if the experiment is embedded in an inline frame of another page. Has anyone had any experience launching experiments on iframe?

I’ve got no experience with it, but my hunch is that embedding in an iframe in itself doesn’t affect timing a lot. However, if the web-page containing the iframe does all kinds of things, that could affect timing.