Controlling a horse, donkey, mule, camel, pig, or strider and attempting to turn horizontally on a low tick rate results in glitches.
When you set the tick rate to a low number, such as 1 using /tick rate, and control a horse, donkey, mule, camel (with a saddle), pig (with a carrot on a stick), or strider (with warped fungus on a stick), horizontal camera movement becomes delayed. With a tick rate of 1, you'll experience roughly a one-second delay in turning horizontally.