I had three of the features within Boost turned on originally so I only tested those three. 1 – Optimize Critical CSS Loading. 2 – Defer non-essential JavaScript and 3 – Image CDN.
After re-activating Boost, all three functions were on by default and the videos did not play.
I left Optimize Critical CSS Loading on and turned Defer non-essential JavaScript off and the videos did play.
I left Defer non-essential JavaScript off and turned on Image CDN. The videos did play.
Based on those three functions, as long as Defer non-essential JavaScript is off the videos play.
However, with Optimize Critical CSS Loading on it shows my mobile score at 33 and desktop at 69. Turn Optimize Critical CSS Loading off and my scores jump to mobile of 57 and desktop to 90.
Thank you for your help and support.