Mechatronics Issue Maybe??

2016 Superb estate, 2 litre diesel, 6 speed DSG.

Car feels like it drops a gear and goes back up again. Judders and clunks aswell. Cut out on take off a few times.

Happens warm or cold (slightly worse when cold), all driving modes, all gears, any speed. No warning lights on dash.

Full engine and gearbox service in January.

Heres the thing - Ive had it on 2 different (non dealer) diagnostics with experienced vag mechanics and there are zero error codes.

Anyone seen this before?