Thanks for the reply. I think we had several phone conversations a few years ago about redraw speed right before imsi dropped red something (can't remember what it was actually called) that did instantaneous redraws but had some bugs. Anyway I have been trying to figure this out because I don't think it is my hardware, since v20 drew all the lines instantly. I think it is dcad together with possibly windows 10 recent update. All my drawings seem to have the same problem and all were created with v20 so I think 2019 may not be as backward compatible as imsi is saying.
I've attached another file with a line. The line takes almost 13 seconds (used a stop watch this time as my previous counting was a bit quick). I would appreciate it if you would draw a similar line and see how long it takes to show up on your machine, also is it running windows 10 with last months major update?
When I look at the prior drawing and this one in 3D shouldn't the top and side views be a single line since they were both drawn in 2D (I don't use 3D at all, so my question my be stupid).
I have another problem which I would appreciate your input on, I removed v20 when I installed 2019, I reinstalled v20 (no errors) but when I either try to start it directly or by selecting a drawing I get the windows 10 startup hour glass for a second then the hour glass goes away and nothing happens (no dcad). The only way I can get v20 to work again is to restore an older backup image of c:\, but that only works for a while until v20 crashes (usually when I run a very old short macro that displays the area and length of the selected items). After v20 crashes it won't run again, uninstalling and reinstalling it also doesn't work, the only thing that works is to restore an older backup image of c:\ where v20 was working. I'm baffled by this, my only guess is when dcad crashes it does something to the registry that prevents dcad from running after that, but I have no idea where to look. What I would like to do is completely remove dcad, everything, but most importantly anything is the registry. You wouldn't happen to have such a program? If I can get rid of everything I assume I should be able to reinstall v20 and have it work. If not I may have to reinstall windows and 50+ programs I use which will take so many hours its hard to believe.
My System Specs...
Windows 10 x64 (Latest Updates)
Intel Core i7-920 2.66ghz CPU
12gb DDR3 1600 Triple Chanel Memory
AMD Radeon HD 7850 2GB 256bit GDDR5 Memory Graphics Card
Hisense 49" 4K Monitor (3840x2180)