First, close unnecessary programs to speed up your computer.
In BC Framer®, a large consider list can also affect the analysis speed. Each option in a consider list adds to the number of calculations required to run.
For example, if you have one on-center spacing, twenty products to choose from, options for 1, 2, 3 and 4-ply, you are asking the program for 80 calculations. Changing to four spacing options increases the calculations to 320 for each member.
(4 x 20 x 4 = 320)
Keep your consider lists short with as few ply and spacing modifiers as possible. See if this helps the analysis time, and then add to them if you need to.
If the floor container has a large consider list, you would need to make the changes before framing, or edit the actual joists in advanced material in addition to the floor container.