Yes that happens. But that could be more a graphic card problem
than screen. A screen that can display x * y resolution can usually
do so at various frequencies with absolutely no change in resolution,
because it's just a matter of refresh frequency and available bandwith
on the link between the graphic card, and screen.
If you have to lower resolution as frequency of refresh goes up,
it is because of the graphic card, and its RAMDAC frequency.
Here are my settings :
Resolution : 1280 x 1024
In game : 1280 x 1024 (using patch for XP)
Anisotropic filtering : 16x
Antialiasing - Gamma correction : On
Antialiasing - Mode : Override any application setting
Antialiasing - Setting : 16xQ
Antialiasing - Transparency : Off
Maximum pre-rendered frames : 3
Multi-display/mixed-GPU acceleration : Single display
Texture filtering - Anisotropic sample optimization : Off
Texture filtering - Negative LOD bias : Clamp
Texture filtering - Quality : High Quality
Texture filtering - Trilinear optimization : On
Threaded optimization : Auto
Triple buffering : Off
Vertical sync : Force off
Drivers : 196.21
Card : Club 3D Geforce 9800GTX+
Direct X upgraded using DirectXX 11 installer
(installs a more recent DirectX 9 version than
9.0c installer)
I took a few screenshots. I don't see many jaggies on screen,
sometimes it does happen but only at some very high angles
of sea but not always (so it might be a rendering bug).
FPS is around 40 to 50/60 in harbors
Outside it's between 100-120 all the time
And it goes down to 50-60 when I am seeing a ship explode
and there are many explosions (this is the most sensible loss
of FPS I can see, when ships explodes and balls of flames
rise up in the air).
Note : in my screenshots, artefacts appear. They don't in the game
which looks fine. Particules appear fine with water, but never on
screenshots (the screenshot saves the picture from the game to
disk before some graphic stuff is added to the picture like particule
rendering and transparency settings and various stuff).
I should try to do screenshots using a real tool and not the integrated
game one. I got Fraps but it makes the game crash when I try to
use it (got the latest version, licensed).