Oh, I know what you mean! I had a similar problem last year.
I had terrible pressure and eye pain from my Radeon rx 570 video card
Severe eye pressure from the Nvidia 2060 super.
Not as much with the Gtx 1080 ti, but still not comfortable to use
In the case of gtx 1660s everything is great! But it is too weak and hot, noisy. But I'm afraid to buy something new