External Monitor Full HD Font Blurry Smudgy

I just bought new MBP Pro and connect it to HP 23ES 1080p Full HD monitor. I had been using this monitor with Windows laptop and text displayed had always been sharp as what expected from 1080p monitor. Then my new rMBP Pro came in and I connect the monitor with HDMI cable with an adapter as new MBP only has USB C.

I found that the text displayed at the external monitor is smudgy and not as sharp as how 1080p should look like or when it's connected to Windows laptop.

I have set all...

External Monitor Full HD Font Blurry Smudgy