Alright
so here it goes:
Every
drawing are on a server which I'm connected to, so no local, and the
connection speed is superfast. Tried local but it still lag.
We
use Xref in all of our drawing: In the Architetural.dwg, the structure is an
xref and the axes are an xref in the structure.dwg. The Architetural.dwg is an
Xref in the electric and mechanic .dwg
When
it starts to lag, it's in every drawing.
I
use these commands to clean up every drawing: _Audit, -purge*appsenReg, purge
all.
All
path are fixed. Support path are on the server and updated.
I
have layer filters in all my drawing as well and layer states for the layouts.
I also use sheets sets in all of them.
All
my drawings are started in a main drawing where I got everything in it from
blocks/Dyn blocks to layer to text and annotation style . After
the drawing is created I purge out everything I don't need in it. This main
drawing is 4520kB and the other drawings sizes goes from 500kB
to 1600kB.
Here's
what I did to trouble shoot the problem:
https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/AutoCAD-performance-is-slow.html
https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Cursor-is-slow-or-jerky-in-AutoCAD.html
Our
IT support uninstalled CAD and reinstalled it. They repaired it. They
tried to install it locally. Updated all the drivers. tried DirectX9 instead of
11. One of my colleague tried AutoCAD 2018 and its the same thing, slow as
hell. Also switch graphic card from Nvidia Quadro 600 to Quadro K2200.
We
also have Kaspersky antivirus running on all of our PC.