Travelling from Gulltown to Dragonstone

[Kofinko]

When i take option Travel to another port from Gulltown to Dragonstone the boat suddenly stucks on coast of peninsula. I tried to fix that by cheat menu but when you are travelling by this boat you cannot do anything.
Specs: OS: Windows 7
           Processor:  Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
           Memory: 8 GB RAM
           Graphics: Intel(R) HD Graphics 5500, NVIDIA GeForce 920M (don't know which one is driver)
Game version: 4.3