Jamesmc303 wrote:
My 2015 Macbook Pro 15"16/251 is really struggling despite having half of it's storage available. It seems that the Memory is overloading when I'm only using basic MS Office programs, even with everything closed in the background. I have deleted caches and removed everything I'm able to work out with my basic computer knowledge. Does anyone have any ideas other than running third-party software?
Start with Uninstall all third party apps that are Cleaners/Optimizers/Anti-Virus/VPN
All of these are known to cause issue on the macOS.
You can see memory pressure and associated apps from the Activity Monitor.app
~/Applications/Utilities/Activity Monitor.app
ref:
Activity Monitor User Guide for Mac - Apple Support
If no insight or resolve—
you can get a good look at your System config. and reveal conflicts or issues, you can download/run this trusted utility https://etrecheck.com
If you need help interpreting the report you can post it here in its entirety in the "Additional Text" box in the editing toolbar below, in your reply.