I am boxing 4 pallys, and 1 priest.

I spam Interact to target mainly in pvp, now the problem is. When I spam interact to target, and when I push my keybind for my priest to heal me. The priest either has a delay of 3-5 seconds before he heals, or he doesn't heal at all.

Its like hes in queue, or something.

I tried setting up interact to target to only go to my 4 pallys, but it still happens, not sure what to do can anyone give me some advice?