Question about the map "Empire of the World".

When you need to go from the city of Princetown to kill King Arthur, there's no passage through the cursed land. Can you give me a hint on how to get through?

You need to pass this place using the "Walk on Water" spell; the Castle of King Arthur will be to the left.

In general, after about 16 months of gameplay, freezes started to occur at the beginning of a new day. I tried the latest HDmod, but it didn't help. What can I do?