I have one question regarding different region games.

I know most games are region free means so you can play online with a friend if he's R1 and im R3

But is there a difference in latency if my friend is in UK and im MSIA He's using R2 and im using R3 compared to both of us using R3 ?

or is the latency depending on what PSN im logged into ? Example A & B same location but use different region PSN ID will it have slower latency then to same region PSN ID ?