sounded like the 'ticking' noise got quieter as you revved past 2500-3000rpm's. might be low oil pressure that initially caused that, and borderline low oil pressure currently, just not enough to trip the light. you might have a clogged oil passage. also it sounded like it went away at idle near the end of the video. a seemingly intermittent noise like that is probably not yet the death of the engine, but you need to find out what is causing the noise. either the autorx treatment has dislodged something or the oil you are using is too thick for the bearings in that motor. could also be a damaged oil pump. STOP driving the car NOW before making things worse possibly causing permanent damage, if you haven't already. drain that oil and change the filter, be sure and use 5w30, i'd try the thinnest 5w30 you can find, maybe someone knows what oil brand that would be. good luck i hope your engine is not damaged.