So me and Meireffer were curious about some macros in Enhanced Client and noticed on Heritage there is no delay for drinking potions after emptying hands, but on the other hand in 2D client there is slight delay between disarming drinking potion and rearming.
Here is how it looks on Heritage:

Notice that you barely see when he disarms/rearms his shield but the buff is refreshed
Here is gif from OSI:

Here is how it looks on Heritage:

Notice that you barely see when he disarms/rearms his shield but the buff is refreshed
Here is gif from OSI:
