thank you for responding,

well when the action is pressed the cooldown isn't completely reset, the cooldown gets pulled back a few seconds. as an example when playing i press the button and the first few frames of the action are started but are then immediately stopped again. when this happens the cooldown does not reset the entire duration but is instead pushed back 4 to 6 seconds, and after that the cooldown can be pressed again and will execute successfully. with normal actions of the global cooldown it just resets the global cooldown and the action is not executed, when this happens mid combo the combo will be lost.
to me i looks like a server side issue, as if the server is not sure if the cooldown or action is ready or not

I have not updated windows, programs or other drivers in the last few weeks, for input i use a Dualshock 4 controller but i have tried using keyboard and mouse but the problem persists.