I found the message and here is the (original French) text:
"Apres plusieurs coup de telephone aux differents revendeur (Uk, Belgium, Nederland) TOUS me confirme que le VR3 calcul la decompression en fonction de la ppo2 du melange utilisé a la profondeur donné si elle dépasse le set point
pré-programmé !!! le vr3 SURESTIME donc le melange que vous respirez, le risque d'ADD est beaucoup plus important sur des plongees engagées et/ou plongees yoyo ... c'est abberant de la part de Delta P mais c'est comme ca !!"
As I translate it:
After many calls to VR3 agents (Belgium, UK, Holland) all confirmed to me that the VR3 calculates deco as a function of the ppO2 of the gas at that depth if it exceeds the preprogrammed set-point! The VR3 therefore overestimates the mix you are breathing and the risk of DCI becomes greater especially on yo-yo profiles... [I read the last sentence as a general slagging of DeltaP]
If anyone on the forum speaks French better than me please tell me if I've misread it. If it is true then it makes interesting reading.