Many good advices were suggested. I'd like to add another two: 1. It may be necessary to temporarily disable some spacing rules which have high values comparing to general spacing rules on the board. Example is a spacing for a high voltage net. 2. It is worth to verify if all network paths configured in env file are up to date. I faced similar problem on one machine and after (temporarily) deleting env file the problem disappeared. Hope it helps, Robert -----Original Message----- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg Sent: 5 kwietnia 2011 20:57 To: Cadence User Group Subject: [PCB_FORUM] Very Slow Allegro v. 16.3 Hello, I was wondering if anyone there would have any tricks to speed up Allegro. I am editing a board with quite a few Constraints in the V.16.3 CM. Whenever I slide a trace, move a via or any mod, it hangs up for 30 sec each time. I have tried changing global shapes params from smooth to rough and even disabled. Short of turning off On-Line DRC, which I do not want to do. Many DRC's to clean up. Mark ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx ----------------------------------------------------------- ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx -----------------------------------------------------------