I can tell you from experience that a GTX-1080 8 MB card would act up at times on my machine, the biggest annoyance was the cursor would disappear requiring a drawing restart to get the cursor to come back. I eventually moved to a P2000 card which has reduced many of the graphic hiccups that would occur during long drafting sessions.
As far as the other performance issues I would suggest trying to keep the drawing size below 2meg. And if you use wipeouts in heavy concentration OR arrays in heavy concentrations you may find freezing them will improve the performance.
In an attempt to clean things up I would transfer the objects to a clean drawing:
-Create a clean drawing
-Purge the original drawing
-Copy the model space objects to the new drawing model space
-Right-click the layout tab in the new drawing and select "From Template " at which point you would browse to the original drawing and select the layouts you want to import.
If you find it is still laggy you should then start to remove sections of the drawing to verify when the performance improves to a level you can work with. At which point you will have to decide on how to handle problematic objects you have isolated.
If you have imported objects that were converted STEP files these may require some clean up to reduce their size. Remember every line end adds weight to the drawing, many converted STEP files from a 3D program bring numerous Tangent lines to illustrate sweeps and rounded corners. If this is the case you may find you will have better performance if you "Flatshot" the 3D object and use that 2D overlay in lieu of the converted 3D object in your drawing.
One useful tool to verify what is happening behind the scenes is the windows performance monitor, the big brother of the task monitor, do a search for "performance monitor" in the windows search bar to gain quick access to the tool.
Once the tool is active you can add CPU IDLE (which you interpolate in reverse, The higher the number the better), Memory Committed Usage and Page File.
If your page file is being accessed you are hitting the resources pretty hard (in a bad way), The CPU Idle should stay at 80 or above and the committed memory should be at 25% (ish), hopefully, no more. Those values would indicate you have plenty of resource overhead to deal with momentary high resource requirements.
If your page file is being accessed take a look at the GPU and see if your workflow is actually accessing the GPU.
If your machine is running around those numbers I mentioned and is still laggy after all the cleanup work the video card / driver is the first place I would look to for improvement in, which in your case will be tough if you are using an onboard graphics chip.
Hope these Tips Help
Best Regards
Tim C.
