UI3 Setting for H264 - Javascript vs HTML5 - Javascript much better?

IReallyLikePizza2

Known around here
May 14, 2019
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I guess the default option for the H264 player under UI3 is HTML5. I've been having some issues with choppiness in UI3, and switching to Javascript solved the problem entirely

Is there a reason not to use Javascript? Are you guys using Javascript or HTML5?