Disable auto save on quote
If you are creating a lot of assemblies or items, auto-saving can cause a slow down because it needs to send a lot of data back and forth. You may want to disable auto save so that you can build items and assemblies without worry of it slowing you down.
Click on the save dongle on the lower right hand side of your screen
Then click on Disable auto-save
Now the quote will not be auto-saved, that also means that for your changes to be saved you must manually save yourself, by clicking on the same save dongle, and clicking Save changes