We are using 2013 SW and having slow performance when using large assemblies. I had a Dell Precision T3600, Xeon CPU E5-1620, 3.6Ghz 4 core, AMD W5000 Graphics (2Gb) and 10Gb RAM and performance on the large assemblies is very poor (5 mins to load assy) and slow creating new parts within assy mode. We are a car converter company and most of the models (see attached) consists imported CATIA V4 files. To try and improve performance I have increased my RAM to 32Gb and put in a W7000 Graphics card (4Gb). All the latest drivers have been loaded. To be honest it has not made that much of a difference. Don't want to keep chucking money at this without significant improvement. My reseller has suggested several features such as using configurations, speedpack and lightweight mode. None have really made much of a difference. Is the current performance, the best I am likely to get with this product? Any thoughts out there welcome.