My initial impressions. At home, PS5 is RJ45 connected to my Zyxel Wifi6 router. Internet is 100/10, fiber, didn't bother with static IPs for consoles. Had the Portal for a bit over a week (came out 8th December in Finland).
At home: almost identical when comparing to Wii U pad, just a hint of more lag. Absolutely everything fully playable. Nearly no input lag. Could play Overwatch and Rainbow Six Siege like directly from console and nothing is different.
At work (company 10 gigabit connection using WiFi): Slight lag, but competitive shooting still playable. Some random hiccups in video stream every 30 seconds, like a short judder that solves itself instantly. RPGs and adventure games have no issues, even Star Ocean 6's combat was completely fine.
150mb 5g connection with my phone using personal hotspot: Pretty much same as at work. I'm leaning to the fact of my small 10mb upstream at home, that I'm planning to upgrade to 150mb if needed.
At my parent's, shitty 4g 30mbit shared connection with WiFi: Same as work but video seems to hover between 540p and 1080p. Lag stays the same, but more judders in video stream. I would rule out competitive shooting at this point, but RPGs and single player FPS's are absolutely fine.
Next week, I'll test at another country. At least within my country, way, WAY better than with my work laptop. I previously used a wired PS5 controller with my PC; the lag was bad enough to make playing Start Ocean 6 a bit hard in battles. No problems whatsoever with the Portal. I never expected results this good.
As I travel a lot for work (and I mainly bought this for remote play at the hotels), absolutely a god-send versus my previous setup. Not much using this at home, as when I want to play, others are thrown out from the living room.
Edit: updated with playing abroad. Currently in Hungary in the outskirts of Budapest, small village. Using inlaws’ 50/30 cable, 2,4ghz wi-fi. Speedtest.net shows 110ms latency to my home ISP in Finland. 1700km from home.
Result: Image hovers between 540p-720p. Small and medium jitters in video along with random macroblocking every 15-30 seconds. Like watching an old 2007 pirated and badly downloaded DivX video on a DVD player. Crackles and pops in audio when jitters happen. Lag is kinda like non-game mode on a low budget television; noticeable but you accomodate to it very quickly. For me, absolutely playable and very good considering the in-the-boonies setup. I understand this might be a cutoff for some what is considered playable, depending the games you play. Rpgs and casual FPS is just fine, don’t expect to play competitively.
I’m plowing through Star Ocean 6 in the evenings just fine, even if the video jitters and small stutters happen in fast battles, but it’s not making me perform worse. I had a match of Overwatch, but the input lag made it casual and non-competitive. This is perfect for travelling and playing those single player games that are slower paced or don’t require 0 lag, like anything 30fps or adventure games. Quite in line what I expected after testing this back home.
After 2,5 weeks, I’m extremely happy of the purchase.