Incorrect score when bit depth is different.

[Ves02]

Attempted to transcode source video with pixel format of yuv420p to yuv420p10le. Comparing them resulted in unusually low score of around 23.
I tried it again with outputting yuv420p and was significantally higher.

Source video must be yuv420p
Command used to transcode:

ffmpeg -i input.mp4 -c:a copy -c:v libsvtav1 -pix_fmt yuv420p10le -preset 8 -crf 32 output.mp4