I have Mac Pro (Late 2013).
I have AMD FirePro D700 6144 MB 2X.
I have Adobe Indesign CC 2017.
I have Philips 272P4 resolution 2560 x 1440 or EIZO 24 CG243W-BK resolution 1920 x 1200.
In preferences, the GPU can not be turned on.
That is right, your Mac is not supported... :-(
Support will never have or in the future, yes?
Here's information on the minimum system requirements needed for GPU Performance features: Adobe InDesign GPU Performance feature enhancements
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