The PS4 version must use it's own in-game region based server for better latency just like every multiplayer game not the PSN default. I'm currently getting 250ms in every session just because
Genshin Impact
Genshin Impact | Genshin Impact Wiki | Fandom
La version PS4 du jeu Genshin Impact, datée en France + Trailer Story - Adala News
Genshin Impact Coming to PS5 'Soon' With Enhancements - IGN
How to Change Languages in Genshin Impact
Genshin Impact version 1.4 update now available - Gematsu
Genshin Impact PS4/PS5 Price in Pakistan
How to redeem Genshin Impact codes on Mobile, PC, PS4, and PS5
Genshin Impact
Genshin Impact hits PS4 September 28, bonuses for pre-orders and PS players detailed – PlayStation.Blog
10 Games Like Genshin Impact to Play Next in 2023 - IGN