All games that you play on the Portal are still technically running on your actual PS5 console; a video feed of your gameplay is simply being streamed to the handheld. With that in mind, the Portal works best when you're still within the vicinity of your PS5 at home playing on your couch or bed. That's when your Wi-Fi connection is the strongest with minimal input lag. However, I've been able to travel with the Portal and connect to my PS5 back home with mostly positive results, even from thousands of miles away.