Yes, you technically can stream Tekken 8 from a PS5 to a PS Vita using third-party apps like Chiaki. But the experience is so poor that no one would call it “playable.”
With the official launch of Tekken 8 on PS5, Xbox Series X|S, and PC, the little handheld that could—the PlayStation Vita—has been left in the dust by modern hardware. But that hasn’t stopped the community from dreaming (or modding). Tekken 8 Ps Vita