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UI lags on 4K display with GTX 970

Joined
Jan 20, 2017
Messages
28
Motherboard
Gigabyte GA-Z170X-Ultra Gaming
CPU
i7-7700K
Graphics
EVGA GTX 970 ACX 2.0 SC (04G-P4-2974-KR)
Mac
MacBook Pro
Mobile Phone
iOS
Hi guys, I have the following config: Gigabyte GA-Z170X-Ultra Gaming | i7-7700K | 32 GB DDR4-2400 | EVGA GTX 970 ACX 2.0 SC (04G-P4-2974-KR), macOS Sierra 10.12.3.
All works fine on FullHD, but on 4K display connected to my GPU via DisplayPort I see terrible UI lags. For example see this video:

I have latest NVidia Web driver installed. I don't think that 4K is resolution that my GPU can not handle — My MBP Retina has 650M and it's smooth.

How to fix this?
 
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