My statement maybe off the mark above
but
I perfer turning off openGL and to use the smaller DirectX8
My machine seem to run faster. Shetchup dosn't need much of a graphics support.
"OpenGL has always been better in the professional graphics market than DirectX, while DirectX is used mostly for computer games. Currently both OpenGL and DirectX have a large enough overlap in functionality that either could be used for most common purposes, with the operating system itself often being the primary criterion dictating which is used, with DirectX the common choice on Windows, and OpenGL being used on nearly everything else. Some esoteric applications still divide the applicability of the two APIs:"
Now Troobleshooting
Safe mode doesn't use the NVIDIA driver or nor DirectX9c , so modeling would be slower and the infomation will be helpful.
See if it stable there?
Try tweaking your NVIDIA control panel to tune-up sketchup (turn on/off openGL)
Old programs like sketchup can use DirectX8 or DirectX9c if installed
Right click, SketchUp.exe - properties - compatibility - xp
The frame work you may have loaded is MS thus work better with DirectX
For OpenGL 3.0 DirectX10 need to be loaded to pc .
pic_0063.jpg
Win7-64bit more buggier than 32 bit
I went to SketchUp Help Forum and found this
Welcome to the Google SketchUp Help Forum
http://groups.google.com/a/googleproductforums.com/forum/#!forum/sketchup
pc
Sketchup 8 Very unstable on my system
By jimminy121212 - 9 posts - 35 views - updated Mar 29 (16 hours ago)
SketchUp Version: 8
"Win7-64bit SP1, 2.13 GHz Intel Xeon, nVidia Quadro 2000, 12 GB Ram
I am experiencing crashes all the time on my system. It often seems to do with panning, especially when inside a group or component or just after closing one or the other, though not always. I would say it just seems generally unstable and buggy on this computer.
My toolbars and menus won't stay put either. Every time I open SU I have to realign everything".
"SketchUp Pro does provide technical support. Go to Help > Contact us and fill out the technical support form. The support staff would be the ones who can interpret the splats".
"You write that your model is getting large. There are some techniques to help you manage larger models" https://sites.google.com/site/sketchupsage/faster.
"Try tweaking your NVIDIA control panel" https://sites.google.com/site/sketchupsage/problems/gpu#TOC-Graphics-card-control-panel-tune-up.
"Something could be conflicting with SU which causes the program to crash. I personally had a mouse driver become corrupted over time and end up causing nasty problems with SU. I remember another nasty crash problem being attributed to a printer driver for someone else. Some SU plugin may cause problems. Troubleshooting crashes without knowing knowing where to begin poking around is a bit of a crap shot. To help isolate system conflicts try running SU in clean boot, keeping note of running processes. I've used HijackThis to record a log of running processes. If the problem still occurs in clean boot, try safe mode and record the running processes for comparison with the running processes in normal mode and clean boot. Safe mode doesn't use the NVIDIA driver, so modeling would be slow."
π just trying to help.