I had no problems with SSD on A329 and A329S. But I always used a coil rubber.
My advice for everyone using a SSD is to use some rubber around the SSD connector. The fastest way to find such a rubber at home is the one used by women on their long hair.
Here is my quick setup before looking for some more professional:
View attachment 81093
This rubber is the reason why the Viofo SSD cable connector is angled and not straight. The first samples of SSD cable were with straight connector but, finally, Viofo made it angled. There was a request for some coil rubber but was not aproved.
The reason for such an angled connector and a coil rubber was to not see people claiming that their camera is not always recording on SSD.
Another thing about recording on SSD on A329S is that the HPM is always recording on the card, but normal PM videos can be recorded on SSD.