Thank you very much for sharing those tips, Björn!
I already see that it is helpful for the other users as well
Now, a little information from me:
1. I have never used Jotcache so I cannot comment on that.
2. I also love Simon Kloostra's website (
JoomlaSEO.com). I learned a lot from him and I used a lot of his advises while optimizing InspireTheme.com
3. InspireTheme.com as well as all our template demos are optimized with JCHoptimize Pro. InspireTheme.com uses the "Deluxe" option (just to be save), while our demos use the "Premium" option. See the attached screenshot, it is from the Paradise demo, but it is the same in all our demos

This means that if you are not using any other 3rd party extensions, if you are using only the stuff that comes with our templates by default, then you should be able to use the "Premium" option and everything should work just fine.
However, as Björn mentioned above, configuring such "Optimization" extensions (JCH Optimize, RokBooster, etc) is basically a trial and error. It depends a lot on what extensions you are using and what assets (JS, CSS) those extensions load.
Thank you once again for sharing this information Björn