Facebook Compression - How to achieve best quality?

Hi All,

I'm a new user of Adobe Premiere Pro CC. Been using it for almost a month now and have been producing videos and uploading them to youtube and facebook. I'm aware that youtube and facebook compress the videos we upload thus causing it to reduce it's quality. I've noticed that facebook compresses the videos that I upload more than youtube as the qualities that I upload there are of bad quality when already streamed on facebook. I'm wondering how will I be ale to avoid having low quality videos on facebook even after it compresses the videos. I normally use the below formats when I export my videos from Adobe Premiere Pro CC using Media Encoder:

Video

- H.264

- Width: 1920

- Height: 1080

- Frame Rate: 24

- Field Order: Progeressive

- Aspect: Square Pixels (1.0)

- TV Standard: NTSC

- Profile: High

- Level: 4.2

- Bitrate: VBR, 2 pass

- Target Bitrate: 16mbps

- Max. Bitrate: 62.5mbps

Audio

- Audio Format: AAC

- Audio Codec: AAC

- Sample Rate: 4800Hz

Channel: Stereo

- Audio Quality: High

- Bitrate: 320kbps

I use Maximum Render Quality in all my vids and I still get low quality video and SPECIALLY audio. Audio is much more important to me as I post cover song on youtube and facebook and this problem annoys me every time I post my videos. Also, the audio I use is in an uncompressed .WAV format exported from Adobe Audition CC. I hope someone can help me with this. I know there is a solution to this one as I see videos on facebook that are really good in terms of audio and video quality.

Thank you!