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Zhldev

macrumors newbie
Original poster
May 17, 2018
8
2
California
Hello, I have a Mac Pro 2009 upgrade to 5,1 with 32gb ram and dual 3.06 cpu. The graphic card is Gtx950 with nvidia web driver.

Monitors set: I using dual monitor,First is a ASUS 27' 1920*1080 another is a 4k Samsung 28' but just using 2k resolution 2560*1440.(scaled)

The issue: The Asus monitor is working good but the Samsung monitor is very lag when I use Photoshop ,Sketch even Chrome devtools.If i adjusted the Samsung monitor to default resolution 1920*1080(I don't know why the default is this and how to change it), every thing will work well. But if I change to 2k or any scaled resolution the lagging will be back there.

My questions:
1. Does any one can give me any advice for fix it by software setting?
2. Should I change to a AMD graphic card like rx560 to fix it?
3. Or change one of the monitor (Please note the model) will get it done?

Thank you for any help!
 
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