I'm having an issue where one user logon on the PC has no problems whatsoever, but another user has slow graphic performance. The mouse is not slow when moving through the graphics area until a line or object is being drawn. Movement is fine until the change is committed, then the graphics lags a moment before returning to normal. Changing the zoom or the active viewing area in model or paper space also causes lag. Moving an object around the screen does not cause any lag until it is committed. This all occurs whether in an empty file or a large drawing.

The graphics drivers are up-to-date (graphics cards are Crossfired Radeon HD6350s), the computer is also otherwise up-to-date, and both users have the same permissions. CPU is an Intel i7-2600 at 3.4GHz, with 8 gigs ram on Win7 64 bit. Draftsight is version V1R5.1x64. The same processes are running under both users, and this all occurs whether the system is running background programs or Draftsight by itself.

Any help would be greatly appreciated.