SOC discrepancy between ABRP & TSLA Nav

I recently did a road trip from Michigan to Florida in my 2020 Model X and could not get the ABRP SOC prediction to match my Tesla, which always was more accurate. I used the live connection, added 500 lbs extra weight, and manually entered the exact same destinations and charging stops as the car. No matter what I did ABRP always showed a much higher arrival SOC initially and then would start to tick down and be closer to what the TSLA showed the closer we got to the destination.

How can I make ABRP more accurate from the start?