Grenade kit with ground targeting enabled.

Been playing around with the grenade kit , and the best way Ive found to use it , is by targeting the monster with tab targeting and then throwing the grenades at it.The problem is that about 1/2 the time it doesnt work, and the grenades dont get thrown and just explode at my feet, doing no damage.This is even when the monster is standing right in front of me , so its not a range issue.Only way I can get grenades to work reliably is to set ground targeting to normal, and then try and target the monsters manually, but this is really hard when they are all running around.Any tips on using grenades with ground targeting.tnx.

Are you using your mouse to click the skill or are you pressing the key with your finger?

Pressing key with finger.The problem is worse if there are a lot of monsters around and I target one , but works OK if there is only 1 monster nearby.ie if hitting tab has only 1 choice of what to target then all is OK.Its when there are multiple possible targets for tab.