I was completely desperate until I found this site. I do hope someone here will be able to help me find a solution so I will be able to use the computer again, without eye strain, nausea etc.
I am one of those people who have some visual sensitivity. Strobe lighting causes problems, and so do fluorescent tubes, high contrast stripes on someone's shirt, and so on. Things get worse at lower brightness conditions. As far as desktop displays are concerned, when I used a CRT, I was only able to work with a refresh rates of 100Hz or higher. Anything below this refresh rate was clearly flickering and caused eye strain, nausea, headaches, vertigo and other symptoms. The 100Hz refresh rate is of course not necessary regarding the LCD's. Yet, although I couldn't see the flickering, I realized that it caused eye strain and all other symptoms. At the time, someone figured out that LCDs employ other sources of flicker/ visual instability such as dithering, FRC etc., and helped me solve the problem by means of the right hardware (as well as setting software to reduce motion; and adapting contrast, brightness, colors, size etc.).
I was using Windows 7 home premium SP1(64-bit), 16-color depth, and had no eye strain or other symptoms and problems.
Display (true 8-bit IPS) NEC MultiSync LCD2490WUXi2, 1920x1200, DVI-D cable
Motherboard ASUS P8H77-M / CSM
Processor Intel i5-3470 CPU@ 3.20GHz 6MB 1155 QUAD
RAM 8GB (2x4 DDR3)
GPU Asus Nvidia GeForce GTX 650 1GB
I am not a gamer, nor do I watch videos. Yet, for some reason in all previous computers, the onboard Graphics or simple Graphic cards did present the 1920x1200 resolution, but the dedicated GPU improved something, and helped me avoid the eye strain and other symptoms. I do not know why, but that happened several times.
Recently had a clean install of windows 10 on an SSD hard drive that was added to the computer.
Since this Windows 10 (64-bit) 32-bit color mode, I can hardly look at the display. I have eye strain, nausea, headaches, and all other symptoms.
In order to try to solve the problem I tried to read some information, and I mention some of the information here, just in case it may be relevant. Since I lack any technical background, I probably did not understand things correctly. I apologize for writing some nonsense here (I hope it will at least be amusing.).
My display is a true 8-bit IPS. Maybe I am wrong, but I thought this implies that it should be able to deal with a 32-bit color depth without FRC or other "tricks".
Still, is it possible that the problems are somehow related to the fact that Windows 10 supports only the 32-bit color depth and does not support the 16-bit color depth I was using before?
Is it possible the color depth increase from 16-bit to 32-bit causes some 'overload' which in turn leads some part of the computer/ display to perform some "trick" such as PWM, changed blanking, dithering etc.? Can this color depth change lead to some 'overload' in the data transfer from the GPU to the display, which in turn leads to those issues?
The display is connected with a DVI-D-Dual link cable. However, according to NEC it does not support a dual-link cable, and actually uses it as a single link cable. I have read that DVI-D-single link works perfectly for up to 1920x1080, but that when it concerns 1920x1200, it can only work by changing the blanking interval or something like that. If this is the case, can this cause the problems?
The display's native resolution is 1920x1200 60Hz. For some reason, the OSD says the refresh rate is 60HZ, but the GPU indicates 59. Even when I choose the option of 1920x1200 60Hz, it does not do anything. It stays 59Hz.
I do not know how to solve the problem and I don't even know what causes the problem (since windows 10).
I do not know what currently causes my problems (since windows 10): is because of dithering, FRC, PWM, Blanking, FPS, refresh rate, or some other terms I am also not familiar with?
Is this something that can be resolved in the software? should I replace my GPU, the Motherboard, the display (or that the only solution is replacing my head…🙂?
Until I found this site, I was desperate. I am not familiar with all these technical issues, and I really hope someone here will be able to help me.