Why does Logic place so much demand on system graphics resources?

Hi.

I am starting to think Logic X places unusual demand on system graphics resources. Has anyone else experienced this?

I use Logic Pro X in a professional studio environment.

All machines are Mac Pros of various types from 5,1 to 6,1 with midrange ATI FirePro graphics cards, Yosemite 10.10.2+, Logic Pro 10.0.7+

The Logic Projects we use have 300+ tracks and a wide variety of software instruments, external MIDI, audio, etc etc. I know these kind of projects can really tax a machine.

However.

Logic Pro X seems to place some unusual demands on OS X graphics processes. There are issues with the Score Editor and Piano Roll Editor, which have not improved much in recent (as of May 2015) incremental updates.

We have had to disable many of the Yosemite graphical improvements to get Logic X to redraw more quickly.

This post comes after repeated attempts to get graphics on custom applications we build for the studio to draw effectively when the Logic Transport is active. These apps (I realize that Apple and Logic can't support third party software, but keep reading) are exhibiting graphical glitches when large Logic sessions are open, especially when the transport is active. My assumption has been that the third party apps are to blame.

But when I run similar sessions in Cubase the graphical problems disappear.

I will continue to investigate the issue from all directions, curious whether any other users are noticing Logic Pro X drawing CPU and GPU resources from other apps.