I am not talking about similar search algorithm at all I don't even need that.
Most simplified explanation:
1. I watch random channel
2. I press the button "back" on the remote (hotkey(shortcut) for your plugin)
3. It loads the history of the zapped channels
on 1.0.13 it shows instantly on 1.0.15 there is very annoying 2 second delay
I hope you understand, no similar searches, translations and other features, just simple press of the button to show the history of the zapped channels, that's slower.