Had our first chance to work on a super high resolution 5k Apple iMac 27″ all-in-one computer today. Had our concerns that the resolution of 5120 x 2880 would cause problems for user who remotely control Windows machines. Glad to report it worked flawlessly with the latest version of Remote Desktop from Microsoft (free from App Store). The app allowed scaling and selecting resolutions the Windows computer would rather run at (1920×1080 for example) and then to fill screen or not.
Happy customer, awesome hardware and worked a charm.