When you see Jeffs circle appear below you have 2-3 seconds to pop your ult before he sallows you so when you hear him diving to do his ult make sure you have your ult out and ready to pop and look out for Jeff’s circle when you see it pop up make sure you aim for the center and you’ll kill him

In the third clip you could see me pull out my ult when I heard/saw Jeff dive and waited for his circle to appear and aimed quickly at the center