Not everything on a market-structure dashboard changes at the same speed, and treating them all as one refresh problem produces either wasted work or a stale number presented as current.
Fast
Spot price and order book depth change continuously, and depth in particular can evaporate in seconds. Anything about executing right now needs to be current, because a depth reading from a minute ago may not describe the book you are about to trade into.
Medium
Open interest, funding and liquidation flow move meaningfully over minutes to hours. Funding only actually settles at its interval, so a rate refreshed far more often than it settles is mostly refreshing an estimate.
Slow
Options open interest and therefore the gamma profile change as trades happen, which on a thin book is not often. A dealer map recomputed every second is recomputing the same numbers — the underlying positions did not move.
That is why a delayed dealer map is a genuinely useful product and a delayed order book is not.
The one that matters more than cadence
Whether the data has a past. A snapshot at any refresh rate cannot tell you whether depth is arriving or leaving, or whether a funding reading is extreme against its own history.
History is the thing that cannot be bought after the fact, and it is worth more than an extra refresh per minute on a figure that changes hourly.
The question to ask a tool
Not how fast it refreshes, but whether it is honest about the age of each figure. A dashboard that stamps every number with when it was true is more useful than one that implies everything is live — and a figure whose staleness is stated is dated rather than misleading.