I preformed a full balance before receiving the message.
# btrfs filesystem usage /
Overall:
Device size: 44.68GiB
Device allocated: 37.56GiB
Device unallocated: 7.11GiB
Device missing: 0.00B
Device slack: 0.00B
Used: 32.57GiB
Free (estimated): 10.78GiB (min: 7.22GiB)
Free (statfs, df): 10.78GiB
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 92.78MiB (used: 0.00B)
Multiple profiles: no
Data,single: Size:33.00GiB, Used:29.33GiB (88.89%)
/dev/mapper/system-root 33.00GiB
Metadata,DUP: Size:2.25GiB, Used:1.62GiB (71.97%)
/dev/mapper/system-root 4.50GiB
System,DUP: Size:32.00MiB, Used:16.00KiB (0.05%)
/dev/mapper/system-root 64.00MiB
Unallocated:
/dev/mapper/system-root 7.11GiB
Metadata is at 71.97 percent
Metadata is at 71.97 percent not above 80 percent yet either.