Hey there, thanks a lot for your feedback and the suggestions!
Improving game performance is still a high priority for me, and it's definitely something I plan to address.
Regarding the quests and dialogues, they're currently just placeholders and will be replaced once I start working on the actual storyline. I plan to begin that phase after finishing the last locations on the map and fixing any remaining bugs.
Building relationships with characters is a great idea that I've also been considering. I can definitely see incorporating something like that into the game in the future :)