Yeah that's not very many. I see "searchFocus", "Twinkle", "HideFundraisingNotice", "ReferenceTooltips", "WatchlistBase", "WatchlistGreenIndicatorsMono", "UTCLiveClock", "purgetab", "dropdown-menus", "OldDiff", and "contribsrange". None of those looks like they'd slow things down too much... though you could probably remove "Add a Purge option to the top of the page", as you can purge the page by click the UTC time at the top-right, or using Page > Purge cache in the dropdown menus. Going to look over your user scripts next, where I see you also don't have very many! I'll get back to you soon —  talk