It sounds like it is idling high enough to stop the auto decompressor noise.
Better check your valves and go from there!
If valves too loose.......you might have a rocker bearing going.
Idle nailed it!
HP2 Sport, R1200S, R100S, KTM 640 Adventure, KTM 520 EXC/Motard, Yamaha RZ350, Hodaka 125 Wombat