This dream seems to reflect your feelings about connection and communication, particularly in relation to your family and your current romantic interest. Here are some key elements to consider:

1. Setting and Family Dynamics: Being at a stranger's house with your family suggests feelings of discomfort or uncertainty in a social setting. It may indicate a desire for acceptance or approval from your family regarding your relationships.
2. The Phone Call: Receiving a call from someone you’re talking to while being in a family environment points to your internal conflict. You may be concerned about how your family perceives your romantic interests, indicating a struggle between personal desires and familial expectations.
3. The Game and Character: The imagery of him playing Subway Surfers, especially with a character that looks like him, might symbolize how you view him or the relationship. It could suggest that you see him as fun and carefree, but the fact that he isn't fully engaging in conversation may reflect feelings of doubt about his interest or commitment.
4. Connection Issues: The lagging Wi-Fi and eventual disconnection could symbolize feelings of frustration or anxiety about communication in your relationship. It may represent worries about not being heard or understood, and fear of losing connection with this person.

Overall, your dream might be urging you to explore your feelings about how your relationships are perceived by your family and to address any communication issues you might be experiencing with your romantic interest. It could be a good time to reflect on what you desire in these relationships and how to express those feelings openly.