Lysander wrote:What is strange is that Chromium and FF both have very good Flash, whereas in Opera and Vivaldi it still works, but not as well. From what I can tell, Chromium/FF are pointed at a different version of the plugin.
Not as strange as it seems, and not
necessarily a sign that two different plugins are in use, as anyone who remembers startling historical differences in Flash performance between Chome and Firefox can attest.
Adobe's Flash player operates by creating a javascript "virtual machine" in which the content plays. Particularly with streamed content, the performance of this VM (including and in particular the JS interpreter) serves as the primary limiting factor on overall performance.
tl;dr: Flash performance is profoundly client-specific.