Possible solutions:
- Update graphics card driver
- Free graphics memory from other tasks
- Move the game around disks
- Try installing it on any SSD if you own one
- Wait a little more when traveling between locations, to let them load up correctly
If any of those methods doesn't help you, then I'm very sorry and you are free to refund the game. I already talked about it, but this is my first project and it's flawed on every technical layer.
Next time I will pay more attention to this and spend money that I now have on professional help, but right now it is what it is, and writing angry review or anything won't help the situation. You can always contact me via email or steam, and we can try figure something out if you want so.
Thant's all, thank you and bye!