Hi, internal delta time function integrated to SLIMax Mgr is based on chunk of car position/time on track and not on simple time comparison like you see on the AC screen and Python Apps etc. and requires a lot of telemetry data which are not part of the Assetto Corsa API (shared memory), unfortunately.
I love this simulation but the lack of telemetry data and poor design of their shared memory buffer is a pity.
The missing data are calculated and require a minimum of 3 clean laps to be accurate enough...
My reply is you can use delta time functon 20 or 47 but it's not really useful to have to do 3 laps to get a chance to have the delta time displayed...
I asked several time Stefano and his dev team during years to add the missing data but they have other priorities... So I gave up and I expect to see an updated API one day.... maybe a bridge with A.C. Python API which seems more advanced is a solution or implement a none accurate delta time based on lap time only...but this is not yet planned.
Sorry again for this inconvenience, if you want an approximate value from the first or second lap use their delta time function based on lap time comparison.
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