Mind sharing what the solution you referenced?

From a hard theory network perspective, having higher bandwidth, lower latency, lower error rate on transmission path combined with closer geographical proximity to servers seem to help mitigate increases in latency.

However, if you argue the problem is solved by your empirical evidence gained by playing Witcher 3 of all games, I disagree with your point. Play a real time strategy game, a MOBA, or a first person shooter. 70ms~ (a report for Stadia reported 70ms-130ms, may be stale data) of lag is noticeable to people. On the other hand, I don't mind streaming a turn based game.