It's not really a "loss", both give you the same results in the end. cool d65 or warm 2 d65. Just the other one takes a bit more hoops to jump through. I think I could be in a similar situation , I had a display 2 that I calibrated my d6500 with , where i had an unusual high blue drive value of 45 but , red was fine. It just seemed to me that blue drive was too high, the meter read blue across the highend ire's at around 85 %, needing to add more. I also think my meter was reading blue to low. Hard to say don't have a reference to compare it too. However everything is from scratch now, I reset my wb sm settings and also changed adc result values. I no longer have a meter, looking at getting a ID3 Pro. So my final um whitebalance settings will change.