TBH I haven't tried lakka myself, last I looked it wasn't substantial enough of an improvement to warrant the effort (android and linux both seem mediocre in and of themselves on the switch hardware);when you say Lakka - do you mean that Citra runs well on Switch if you have Lakka installed?
what version of Citra works best for that?
BUT don't take my word for it, check youtube for demos of it in action and peoples latest attempts, maybe things have improved by now.