Well, that's interesting, without an exclamation point, Item #2 Apparently the other Duergar ship is only 60 seconds out from the beach. Cast haste on a character then immediately set sale. They intercept you, and engage in conversation. If you immediately start a fight, you become lethargic and stunned. 10 rounds of haste at 6 seconds a round, then you are lethargic. This implies they were right out there, and should have been easily in sight before you left the dock, as you are not moving fast at all.
Technically, the scaling of long duration effects converts rounds into 1 minute intervals (Which is the normal denomination for a round in D&D). Meaning you'd be 10 minutes out by the time you came across the other boat.
BG3 does janky stuff with its speed (Often making things go faster than it should). But a round should definitely be longer than 6 seconds. Given that the typical D&D duration of a Standard Action is 6 seconds (With a Bonus Action taking 3 seconds).
That said, BG3 also does things like pausing time during conversations and interactions too. If only for that specific character, meaning you can buff a character, start a dialogue and the buff won't tick down while you're in the dialogue, even if you can select another character and go walking around with them.
This with its weirdly fast timers for rounds, can cause some jank with assessing the passage of time.
