Latest firmware resolves issue, only 10% deviation from using the secondary drive instead of 50%, however, Random 4K tests showed nearly a 50% drop on the latest firmware. I did not do a fresh test prior to see if something else may have caused this over the last some months.
A2 -> 66 firmware.
Prolly not buying adata again given their updater/software/firmware is a headache,
I downloaded the update from a 1tb drive that the SSD toolbox claimed needed an update. The 1TB drive will not be detected by their firmware tool lol... I took the same tool to my 2TB drives and both were recognized without issue and updated. Ironically the toolbox kept telling me the 2TB drives do not have any updates when all 3 drives were on A2 firmware and the latest is .66