hello ive had this problem for a while now, as seen in the video the arms are lagging behind when im looking around and not as smooth as i want them to be, maybe not very clear in the video but its very obvious otherwise. any help would be very appreciated!
You probably have the tick update order of your components set wrong.
Take a look at the Tick Group Order section.
You need to update the components in order of execution.
If the arm ik relies on the camera then you need to update the camera transform before the ik etc