Bad performance using formulas

[antexity]

I am finding my spreadsheet very slow from adding a small amount of records to a large amount. There may be better ways to write a formula or an entirely different concept. See attached, I know the trend tabs are a huge performance hit, but unsure how to lay out the data in another way instead of laying it out the way I did it to get the graph that I am after. There are a few arrays everywhere and all are set to 25000 for maintenance free.

Any help is appreciated.
Thank you so much.
Bill