StreamLogic reference

StreamLogic is the engineering layer of SimDeckOS: it records your reference laps, works out a live delta, and runs the Director. The StreamLogic page shows what it does. This guide is the reference — the lists and the orders, for when you are setting it up.

StreamLogic is part of Premium. The app is free and everything you build in it is free; see pricing.

No setup

Your fastest valid lap on each car and track becomes the reference by itself. There is nothing to record and nothing to choose.

A lap that ran off track or through the pits is not banked. While you are on one, the live delta dims and says why.

One reference per track

The same circuit often reaches your sim more than once — in Assetto Corsa especially, as mod versions of one layout in their own folders, with their own skins. StreamLogic knows they are one track and files your reference under it, by the circuit’s real name. One lap on any version gives you the reference and the live delta on every version of it.

• Nothing to sort. The SimDeckOS team maps the versions, and the map arrives with content updates. A track that is not mapped yet works exactly as before, on its own.
• Laps you already drove fold in. Laps banked on a version before it was mapped join the track by themselves: the best reference stays, and the lap counts add up.
• What stays apart. A different layout is a different circuit, so the GP track and the Nordschleife never share a lap. Nor do the two directions, or two sims. And a reference is always for the car you drove it in.

The Tracks page lists every track by that real name, not by its folder.

The Director’s beats

The Director watches the session and decides what belongs on screen. Short moments hold the display while they last and then hand it back; the session’s state nudges it once and leaves you alone.

Beat	When it fires	A Race engineer key shows	Strip screen
Traffic	A car is alongside	Gap behind	Radar
Fuel	Fuel runs critical, once a lap	Fuel target: what to save per lap	Fuel
Pit	You are in the pit lane	Pit in: laps the tank still gives you	Pit
Coaching	You have a reference lap here	Losing it here: the sector costing most	Delta
Learning	No reference yet for this car and track	Last lap, as the benchmark	Lap
Debrief	The replay after a banked lap	Consistency	Last-lap replay

Every beat can be switched off, and you choose which screen each one hands the strip.

A beat only fires when the sim reports what it needs. A sim with no spotter data simply never has a Traffic moment.

Standing the Director down

Tap a key and the Director stands down for 20 seconds by default, so you can read what you wanted without it changing under you. Change the hold in the Director’s options.

What follows a beat

A key set to the Race engineer field shows what the Director just picked, and a wheel rim set to Follow draws the matching bar. Your wheel’s dash can follow the same beat too, but that one is off by default — switch it on in the Director’s options.

The wheel rim

In a car whose own dash already shows the revs, your wheel’s rev lights repeat it. On a supported wheel, StreamLogic can hand the rim LED strip a different scene. You choose it per car in the Garage, because whether the revs are already in front of you depends on the car you climbed into.

Scene	What the rim draws
Delta	A centre-out bar: zero in the middle, faster grows left, slower grows right, as on a RaceLogic and on the strip.
Sectors	Your mini-sectors against the reference, straight on the rim.
Relative	The cars ahead and behind, placed by gap. Close ones turn red and blink.
Fuel	Laps of fuel as a lit run. Amber near your warning, red and blinking when it is critical.
Shift	The car’s own shift lights.
Follow	Whatever the strip screen is showing, which means whatever the Director decided.

What gets the rim, in order

When two things want the rim at once, the one higher in this list wins:

1. The spotter — a car alongside lights the side it is on, over any scene.
2. A Car Lab beacon you set to use the strip.
3. Shift lights, past 85% of the rev range.
4. Your scene.
5. Shift lights again, whenever the scene has no data yet, instead of a dark rim.

An animation you set to fire on the strip can borrow it for a moment, then hands it straight back.

The engineer overlay

The same engineer as a small window that stays on top of the game, so the delta and what the engineer says are where you are already looking.

It is a window that stays on top, so the game has to run windowed or borderless. In exclusive fullscreen there is nothing for it to sit over.

Shapes

Four, and each shape remembers its own position:

• Card — a small panel out of the racing line.
• Bar — one line across the top.
• Corner — the smallest, tucked into a corner.
• Strip — the same screens as your Stream Deck + touch strip.

Cells

Pick what it shows: the beat and what the engineer says, delta, losing it here, consistency, tyre trend, fuel, gaps, position, your reference.

Staying out of the way

The window can be click-through, it scales, and it is only visible while a game is running. It can open by itself when a session starts.

Built-in controls toggle it and switch its shape, so you can put it on a key or a wheel button and never leave the car to change it.

The coaching numbers

Number	What it means
Delta	The live gap to your reference lap.
Predicted lap	The lap time your current pace projects.
Losing it here	The part of the lap you are giving away the most time in, against your reference.
Consistency	The spread of your last five valid laps, in seconds. Lower is better.
Tyre trend	Pace falloff per lap over the stint. Wear shows as a rising number.