BNI MAC ATTACK! [UPDATED]

Dear BNI readers, my 6-year-old iMAC seems to be running out of RAM and it is not possible to upgrade it on the system I have. Ain’t planned obsolescence great?

Until I get a new one, or find a way to fix the problem (which looks doubtful), posting new stuff likely will be less than usual. If anyone has any suggestions (simple enough for a computer dummy like me to understand), this is the operating system I have:

iMAC 21.5  inch)

OS X El Capitan version 10.11.6

Processor: 2.7 Ghz Intel Core 15

Memory: 16GB  1600 Mhz DDR3

UPDATE! Seems to be working better now since I asked it to FreeUp space in the RAM section and also deleted some applications and plugins that I never use.

Thank you all for your kind suggestions. I think I will update to Sienna as many of you recommended.

Sorry, Grumpy, you don’t get to plant your butt on top of a new computer, at least not for awhile, I hope.