Wings 3D choppy on a dual GPUs laptop @ Full HD Resolution

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Hi dgud, thank you for your answer, please see my comments below.

(06-23-2015 01:45 PM)dgud Wrote:  My HP laptop with an Intel gfx card works fine on external monitor on 1660x900
on Windows 7.

Is your laptop fitted with any other GPU but the integrated gfx card? have you ever tried working on W3D without external monitor? What resolution have you set? I suspect my problems may come from from the dual GPU architecture or from the screen, though I can be wrong.

(06-23-2015 01:45 PM)dgud Wrote:  Without the image plane does it work ok?

No, I tried loading a variety of models that I was working on before buying the new laptop. All of them show the same problem: no matter how complex is their geometry, W3D becomes choppy whenever I pan the camera or move vertices around, as far as screen resolution is set to 1920x1080, 1680x1050, 1400x1050, 1280x1024 (among the ones allowed by my gfx card). The one mouse imput which is handled smoothly is the zooming in/out, made with the mouse-wheel. On the contrary, resolutions of 1600x900, 1440x900, 1366x768, 1366x768, 1360x768, 1280x960, 1280x800, 1280x768, 1152x864 and 1024x768 seem to work well. Thinking about it, it appears that the discriminating factor is vertical resolution: it can be a mere cohincidence, but setting it to anything higher than 960 dpi will make W3D to go haywire. Also note that I can edit those models within Photoshop and Blender without problems of any sort, no matter what screen resolution I set.

(06-23-2015 01:45 PM)dgud Wrote:  Does switching back to Intel card makes it worse?

Neither better nor worse. I have also tried disabling the Intel Gfx card at all and I downgraded screen refresh rate to 40Hz, not to avail.