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Race & season ·F1 25 and Assetto Corsa players

Am I actually getting quicker?

Every sim racer asks it, and the game cannot answer, because the game forgot June. StintLab keeps every lap on your own disk and turns all of them into one record: how much you have driven, your best at every circuit, and how much you have found since your first session there — with rules that stop it flattering you.

· 9 min read · Checked against StintLab 2026

The short answer
  • Time on track is the sum of every lap you have recorded, scruffy ones included.
  • Your personal best at a circuit is your quickest counted lap there, in any session.
  • Improvement is your best in your first session at a circuit, minus your best now — only in the same car, and only from a second session.
  • A laps-a-week chart covers the 26 weeks up to your latest session, with idle weeks drawn, not skipped.

Why the question needs a record

A game shows you tonight. What it does not keep is the story: the three evenings in June you spent learning a circuit, the week you found half a second, the month you did not drive at all. Without every session in one place, “am I getting quicker?” is answered by feel — and feel is generous on a good night and brutal on a bad one.

StintLab writes every lap you drive to disk the moment the game times it and deletes nothing unless you ask it to. That makes the question answerable, and Your driving — the section that leads the printable session report — answers it.

The record, worked through

Here is the record for a synthetic three-session season at one circuit — June, July and September, built from StintLab's demo laps and computed by its own code:

Time on track29 mevery lap you have driven
Laps2116 counted
Sessions3over 3 days
Biggest gain−0.786at Monza, since your first session there

Under the tiles, the season in a few sentences — StintLab's output for this record, word for word:

  1. 29 m on track across 3 sessions and 21 laps, since 14 Jun 2026.
  2. Biggest gain: Monza — 1:20.950, 0.786s quicker than your first session there.
  3. Most driven: Monza — 21 laps over 3 sessions.
  4. You drove on 3 separate days, averaging 7 laps a day.

Then every track, most driven first:

TrackGameSessionsLapsTimePersonal bestvs first session
MonzaF132129 m1:20.950−0.786

Session by session, the best lap went 1:21.736 on 14 Jun 2026, then 1:21.379 on 19 Jul 2026, then 1:20.950 on 17 Sep 2026. The improvement figure is the first against the best: 1:21.736 − 1:20.950 = 0.786 s found.

Activity: the weeks you did not drive count too

Laps a week across the example season. The empty weeks between sessions are drawn as empty weeks — the honest half of an activity chart.

A chart built only from the weeks you drove would draw a month off as no gap at all, turning “I stopped for a month” into a smooth line. So every week from your first to your latest is drawn, with idle weeks as empty bars. The chart covers the 26 weeks up to your latest session — about half a year.

Time on track: why the scruffy laps count

Time on track is the sum of the lap times of every lap StintLab has recorded — valid or not, flying or out-lap — and it is printed the way a person says it: “4 h 12 m”, not “252:14.880”.

Two alternatives were rejected on purpose. “Time the app was open” would count sitting in a menu. “Time on counted laps” would quietly delete the half of an evening where you were learning the circuit and binning laps for track limits — exactly the driving that makes you quicker later. If you drove it, it is in here.

The rules that stop the record flattering you

Improvement is the one figure in the record that can lie, so it is fenced in:

  • A track is a game and a circuit together. Assetto Corsa Monza and F1 Monza are never compared — merging them would invent a gain of many seconds. In Assetto Corsa each layout is its own track too: Silverstone GP is not Silverstone National.
  • A faster car is not a faster driver. Improvement is only reported when your first session and your best session there were in the same car. Otherwise your best still stands — it is a fact — and the improvement is withheld with the reason: “first driven in a Williams, best set in a Ferrari”.
  • One session is no trend. Your best at a circuit stands from your first counted lap; the improvement reads “one session here so far” until a second session there has a counted lap.
  • Only counted laps set a best. Valid, timed and driven from the line — the same rule as the session report, so a quick lap binned for track limits never becomes a personal best here.

When some tracks have a best but no improvement yet, the record says so and says what to do: drive them again in the same car.

Using the record

  • Pick a focus circuit for a few weeks and watch its improvement figure rather than jumping between tracks. Progress spread over twelve circuits is real but invisible.
  • Check monthly, not nightly. A single evening is noisy; the record is built for the question you ask a month in.
  • Pair it with the session report. The record says whether you got quicker; the session detail underneath — best lap, theoretical best, consistency, where the time went — says why. See consistency and theoretical best.
  • Keep your own charts if you like. lap-times.csv has every lap of the sessions in the report, one header, ready for a spreadsheet.
The 'Your driving' summary: time on track, laps, sessions and biggest gain, a laps-per-week chart, and a table of every circuit with personal best and improvement.
The Your driving summary as StintLab laid it out in an earlier build, from synthetic laps. It leads the printable session report: View → Session report.

Questions

Does time on track include invalid laps and out-laps?

Yes. It is the sum of every lap StintLab has recorded, scruffy ones included — they were still driven. It is not the time the app was open, which would flatter you for sitting in a menu.

Why is my improvement at a circuit missing?

Either you have driven only one session there — the figure reads “one session here so far” until a second session has a counted lap — or your first session and your best session were in different cars, in which case it says so, for example “first driven in a Williams, best set in a Ferrari” — or your first session there is still your best, so there is nothing found yet and the table shows a dash. Your personal best stands in every case.

Are F1 25 and Assetto Corsa laps at the same circuit combined?

No. A track is a game and a venue together. An Assetto Corsa Monza lap and an F1 Monza lap are different laps on different surveys of the circuit, and merging them would invent gains no driver found. In Assetto Corsa each layout is its own track as well.

How far back does the record go?

Every session on disk — StintLab deletes nothing unless you set keep_sessions in settings.toml. The activity chart shows the 26 weeks up to your latest session, and the track table the 40 you have driven most, with a line saying how many more there are.

Can I chart my progress myself?

Yes. Every session report writes lap-times.csv beside it: one header and one row per lap for the sessions in the report — session start, track, car, lap time, sectors, whether it counted, conditions — ready for a spreadsheet.

Does it work for Assetto Corsa too?

Yes. The record covers every game StintLab records, with each game's laps kept separate.

Assetto Corsa telemetry

PIT LANE ·StintLab 2026 edition

Read your own laps like this.

StintLab records every lap you drive in F1 25 and Assetto Corsa on your own Windows PC and builds the charts on this page from them — the overlay, the braking table, the practice plan, the season record.

  • $19.99 USD, once — no subscription
  • No account, nothing uploaded, no licence server
  • Windows 10 & 11, F1 25 (both formats) and Assetto Corsa