Remote Desktop Access Blurry image at full resolution

Hi Guys,

Recently i have upgraded from Win 7 to Win 10 Professional.

When I am using Win 10, the resolution of Remote Desktop (to my Windows Server 2003 R2) is blurry at full resolution at 2560 x 1440 / full screen.
The resolution is only ok if i scale it back to 1920 x 1200. Please see screen capture images below.

When I was using Win 7, I have no issue with the Remote Desktop access resolution at full monitor resolution.

There was no change of monitor, GPU or server equipment (hardware and software) before the upgrade from Win 7 to Win 10 Professional.

Appreciate any advise. Thank you very much.
Cheerios,
Dom.