jordan I can't confirm, because I haven't been using ARC GPU for 2 months now. I remember though that when I played with two of my setups in 2 different settings (rooms) with two monitors I had the following impressions:
Setup1 @ Room1 (AMD GPU)
Enclosed without direct sunlight, smaller desk, monitor closer to eyes
Intel CPU, AMD R9 380
Setup2 @ Room2
AMD CPU, Intel A770 (Intel GPU)
Southern side, curtains need to be closed for optimal work experience, monitor can be set quite far away.
Both setups use bias lightning.
Monitor1
Dell P2314 23'' IPS WLED
Monitor2
Samsung SJ55W 34'' VA WLED
I've been moving things around during my December gaming spree and found out I cannot use Monitor 2 in the Setup 1. I was simply getting strained really fast and later opted to pair it with Setup 2. I never thought about that the problem might be with the graphics card (dithering problems?).
I also used the Monitor 1 with Setup 2 for an extensive gaming period (1 month) and really close to my eyes. The problem was not as big knowing I spent about 3 weeks in half a day gaming.
I'm using the 1st setup with 1st monitor for office now and 2nd setup with 2nd monitor for gaming (no time now).
The setup I like and use the most for browsing is actually a JMGO O1 Pro LED projector (Monitor 3) in the living room PC with Intel iGPU (Setup 3 @ Room 3). It doesn't strain my eyes and I usually fall asleep early watching movies or even browsing the web.
The fourth testing ground is in my office at work, which is naturally lit on the northern side. I just bought a dual Dell U2415 (Monitor 4), but I am using an AMD RX550 card (Setup 4). Been experiencing lots of eyestrain, dryness days after and mild headaches, just by looking at the monitor, but this might be to various reasons:
- Eyes not yet adapted to the new monitor(s)
- Different coating on the monitors (one is 5 levels brighter and has a brighter color profile too -> spent an hour calibrating)
- used to have problems with flicker on the right side of a brighter monitor, but narrowed it down to a "faulty" DP to miniDP cable
- Positioning of the monitors
- GPU
Hope this helps with finding solutions to some of the questions regarding eyestrain / GPU use in Linux.