Screen tear issues on external display

[brai9dead]

Hi all,

Apologies if this should be in a different forum and mods please feel free to move.

I bought a custom built laptop around 3 months ago with the following core specs:

15.6" Glossy 4K PLS LED Widescreen (3840x2160)
Processor (CPU) Intel® Core™ i7 Quad Core Processor 6700HQ (2.6GHz, 3.5GHz Turbo)
Memory (RAM) 16GB HyperX IMPACT 2133MHz SODIMM DDR4 (2 x 8GB)
Graphics Card NVIDIA® GeForce® GTX 970M - 6.0GB DDR5 Video RAM - DirectX® 12
1st Hard Disk 1TB Samsung 850 EVO 2.5" SSD, SATA 6Gb/s (upto 540MB/sR | 520MB/sW)
M.2 SSD Drive 256GB SAMSUNG SM951 M.2, PCIe NVMe (up to 2150MB/R, 1260MB/W

I have recently bought a Samsung u28d590d 28" 4k external monitor for use with this laptop but with the screen set to 4k resolution I am getting tons of screen tear. I have tried both HDMI and now on a DisplayPort 1.2 cable and its exactly the same.

I have tried changing a few settings in the software but I don't seem to be getting anywhere. Does anyone have any ideas?

Best wishes,

Matt

 

[jpaul]

Have you matched the video refresh rate between the material you are viewing and
the refresh rate you are running the monitor at (seems you monitor will do max 60hz via dp and 30hz via hdmi)
otherwise video frames have to be interpolated and tearing can occur.
I had used media player home cinema with the re-clock plugin to ensure optimal matching.
but can be done manually .. if it is blue-ray monitor at 24hz (or 48) and most pal videos 50hz

 

[brai9dead]

I must admit, I haven't but that may well be stretching my technical knowledge.

Running Windows 10. Some things seem to run well (Xbox streaming for instance) where as other video such as Netflix, YouTube etc seem to be very much effected. To be honest, it is also visible when scrolling quickly through pages which seems a bit odd.

Didn't know whether setting the external as the primary display might help?

Thank you for the advice

 

[jpaul]

I had had some scrolling aberrations using firefox and disabled graphics hardware
acceleration for firefox (google it)
but otherwise I would check nvidia properties for external display to check it is running at 50 or 60hz using display port, if it were 30hz I would think this might well create some issues with utube/netflix

 

[jpaul]

do you exclusively use one browser ? scrolling problem might be alleviated if you changed;
also if the netflix/youtube plugins are different for browsers , trying another browser may help