[Vimes]

Interesting that might explain the noticeable lag, but small, I have noticed when using the Estuary Mod skin. Even with the overclock of the Pi3 it is still there.
The best thing that I have done for my Pi is to add a small cooling fan, it has dropped the reported temp by around 20c, I no longer get the warning square popping up as it did on occasion before indicating high temps.

Do you get the lags with stock Estuary?

I realised that I had enabled animated posters in the modified Estuary Skin and after turning that feature off it has greatly improved when navigating.
Also turning off the Next Up (didn't want) and Artwork Downloader (increase CPU load when running and not needed by me) addons might have made a difference..?

As noted the differences for me is small but I do not get any lag at all with the default Estuary skin.