Quote Originally Posted by samsc View Post
what resolution of triple heads?

how many monitors? which monitor port? hdmi or mini display port?

-

these things really dont like working at high resolution

any difference you indicate is extremely unlikely to be anything to do with server or non-server OS-
Only one output in use, Mini Display Port with Apple Dual Link DVI adaptor and Triplehead on. 3x 1024px x 768px @ 60hz.

The machine came with a fresh install of OS X Server on, I ran Catalyst and the content and results as above, unsatisfactory. Settings were as per usual, services turned off, spotlight off etc.. All from internal SSD.

After installing fresh OS X, all good, no problems at all.

Again, this was outside and we were in a hurry so little chance to experiment, and this was back in October last year.