Fastest OSX for 2010 Macbook Air

[DancingMonkeysPhotography]

I recently bought a 2010 Air off ebay for a killer price. It currently has High Sierra installed, but it's sluggish. I won't be using this machine for heavy use (I have the 2018 mac mini for that)... internet browsing, itunes, and light photo editing is what i'll be doing with it.

I read somewhere El Capitan is the fastest and most stable OSX version for this air. Is this true?

 

[reukiodo]

I run Mojave on it without issue, but that is mainly for the dark theme. What apps are slow on it? The only app that is super slow for me is Chrome because it's so bloated and misuses what little RAM these Airs have. Safari is great with only a few tabs, but I find Firefox to be the only good browser when lots of tabs are open.