Everytime I encounter enemies I have to keep manually clicking to attack, I even have everyone on Aggressive and AI active. Thiis ruining the game for me please help.

What's above your characters' heads? Is it cogwheels or three periods (...)?

If it's three periods, they genuinely believe they are supposed to be doing nothing, based on their AI instructions.

If it's cogwheels, they are being stupid for no reason. This happens to me as well. If you press the stop button, they will immediately start acting based on their AI. The default keybind for this button is S, so you can just select all and press S when combat starts. Yeah, I wish I had a better solution, especially for a problem that has existed since launch as far as I remember.