DCT 135/335 program has built in m3 dsc off and 135/335 traction on LC routines (default).
So you need to switch to M3 launch routines, which advanced, uses complicated calculations with wheels speed, acceleration sensors and so on, different clutch management. All adjustable. Maybe this helps.
Even stalk rpm change could be possible (but not sure because of SZL can packets difference). This switch is possible and we are testing it now.
1. When you reflashed your DSC to 1M you lost traction mode, only dsc on - off. There is a program patch for enable LC for 1M DSC reflash, which checks not traction, but dsc off status as in M3. Launch is without help of dsc traction for clear reason. Switch to M3 routines necessary...
2. If we switch to M3 routines, cruise stalk is not working surprisingly for rpm adjust. M3 uses OP_PUBU_CCTR_ACC (byte 3) status of CAN ARBID 0x194 (BEDIENUNG_TEMPOMAT).
So help heeded for investigation of 135/335 SZL cruise stick CAN packets bits. Can anyone dump that ARBID data interchange?