My single experience of clutches and remap was on a mk6 GTi. I bought it at 82k, stage 1 remap had been done at 70k, stock clutch lasted until 93k until the slave shat itself. Had the clutch changed for an OEM item as the clutch was worn enough, changed by the garage and also gutted the clutch Bleeder block by removing the little orange disc that restricted the oil, thinking this was a factor for the slave failure. All was well for the first 5k. After that I would get clutch slip when clutch was engaged and on the move (not pulling away) when I tried to accelerate in 3rd upwards. This wasn't me mashing the pedal either, it was feeding in the power. I'm no racing driver, I'm a professional driver and can't afford to drive like a tit most places so most was standard driving, overtakes and B road blasts.
The car was sold when I went to my Octavia fully stating to the buyer I thought it needed an uprated clutch pack to get the best out of the map.
I suspect in truth that the garage put a cheaper clutch in, however this has never been identified. Likewise, the map and dyno printout seemed strong so maybe it was an aggressive map. Lastly, I would imagine the gearbox is the same between the mk6 GTi and Octavia as the engine was a gen1 EA888. All clutches have torque limits, worth checking that torque is limited in the right circumstances to stop slip on the map (APR, Revo, etc will definitely have this in place)