We are struggling with poor overall efficiency performance and instability with our large assemblies in SolidWorks 2019.  We are using simplified configurations and envelopes extensively in an effort to keep assemblies as lightweight as possible.  This is an attempt to be able to work with upper level assemblies with some sort of efficiency.  The Dell Precision 5820 is outfitted well and is a good performer, large assemblies in SolidWorks just brings it to it's knees.

With all the problems with 2019, I would like to upgrade to 2020 or 2021, but I have read of many issues, some new and some recurring, leaving me concerned, to say the least, about upgrading.  What I am looking for is any input as to any performance improvements experienced by users of large assemblies when upgrading from 2019 to 2020 or 2021.  If there is reasonable performance improvement, I will further consider upgrading.  Thanks for your input.

Best regards,

Frank