You might already know the new page speed test provided by Google, so I did a quick test with the current public campus, from Chamilo and Dokeos here are the results:
http://campus.chamilo.org
89/100
http://campus.dokeos.com
62/100
This is the explanation of the Page Speed Score :
The Page Speed Score indicates how much faster a page could be. A high score indicates little room for improvement, while a lower score indicates more room for improvement. The Page Speed Score does not measure the time it takes for a page to load.
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If you do the desktop test then Dokeos has 77/100 and chamilo 80/100
Little difference
You did the mobile test and then there is indeed a difference. Thanks for pointing this out
campus.chamilo.org here gets only a 77/100 instead of 89 for mobile