ABAQUS V.2018 Random vibration analysis become very slow

"[email protected] [Abaqus]" <[email protected]> 30 Mar 2019 13:42:21 +0000
Newsgroups gmane.comp.mathematics.abaqus.user
Message-ID <[email protected]>
Hi all
 I've used abaqus 6.12 to do the random vibration analysis , and everything is fine. Until now, we upgrade to V2018, I found the CPU time became very very slow. I try to use the same inp file and submit this job in 6.12 & V2018 to compare this situation at the same computer.  It tooks 12 hours in 6.12, but over 24 hours in v2018. Is there anyone get the same trouble  and how to solve this problem. 
 

 RJ