Zilean's new time bombs are bit buggy

Trying out Zilean's Time Bombs and the range for both the damage and the attach are a bit buggy.

Many times I would throw a bomb next to someone and it would be inside the attach circle but would not attach, the same would happen with the damage, the actual effect is smaller than the indicator. The impact for the bombs also seems lacking, the addition of hard CC is nice, but the reliability of it is generally crap. I'm not should what could be done except reduce the travel time of the bombs or make it so one bomb has more utility.