It really shouldn't the only reason it should crackle is if you turn the volume past 0db because some audio sources might peak.
Your issue of audio crackling is usually a non-grounded auxiliary or, a high memory latency / memory bug.
When I was on z97 and had my memory set to 2133mhz [a very high xmp value for ddr3] the audio constantly crackled when running certain applications. This can also be experienced when running with a lack of buffer while using an ASIO driver.
Completely unrelated to the plugin itself but maybe exacerbated by it.

If you open the popup to control the volume then on most sites that have html video it should be able to increase the volume unless the site employs a strict CSP.

If you open the popup to control the volume then on most sites that have html video it should be able to increase the volume unless the site employs a strict CSP.