Thanks John, good point about current drivers - I updated my desktop not long back but the laptop is new to me (although second hand). I’ll check the nvidia site now.
No linetype patterns assigned to layers, just lots of lines. Yes, they will be very small when zoomed out - see attached pic, the blue deck plans at the bottom are about 140m long. The lag doesn’t go away when zoomed in close.
Window select a bunch of curves.
In the Properties Panel, is the linetype all By Layer or Continuous?
If it’s (Varies), then I think you have curves with a super tiny pattern that is making a boatload of curves to display.
Zooming in close was to see if that’s the case.
Line types were different. Changed them all to ‘by layer’ and no difference.
One thing I have noticed - the lag seems to be an initial lag, so if you switch from zoom to pan to rotate you get the lag between navigation ‘requests’. Once you’re navigating it’s all beautifully smooth. This becomes very obvious when using the 3d connection space thingy - keep the navigation going then it’s super smooth. Pause and restart it briefly and you get the lag - almost like it taking time (a little too much) to calc a scene optimisation or something prior to starting the navigation.
What happens if you unplug the Space Mouse?
Is it OK then?
Back on the linetypes thing…
Get the name of one of the line types being used.
Go into Options > Linetypes
Look at the pattern definition and select the one you know is being used
The numbers are the length of the lines in model units. If they are very small, add a model space scale so make them big enough to see on the screen. When the pattern is big enough to actually see, then it son’e be bogging down performance.
I’m out of ideas short of getting the file with the curves in it.
If you want to stage it somewhere I can get at it, I’m happy to see if I can figure anything out.
Ok, thanks for trying John. Perhaps I need to just draw everything from scratch in V6 (rather than importing an old GA to steal bits from) and see how the performance goes as the GA gets more detailed.