Suspiciously high RAM usage - WINDOWS EXPLORER DAMN YOU!

[andrija.radica]

Would someone please explain to me why does windows explorer use so much ram? And why is 12gb/16gb cached? Is this normal or is it some memory leak. If you would please take a look at theese screenshots I put on imgur:
SCREENSHOTS IMGUR LINK

Info:
I have Windows 10 Home installed on a ASUS ROG G752 VT, my drivers are pretty much up to date and I've been using it for about 7 months. Specs: I7, nvidia 970m, 256 M.2 + 512 2.5" SSD + External ~4TB HDD.

Oh and
RAPID mode is disabled/I don't know why but it's only an option in my Samsung Magician when I refresh my drives so I don't touch that option, it's grayed out..the new update is not that great. I can't undo the over provisioned space which I'd previously set, but that's ok...irrelevant stuff.

My thoughts:
*Could this be because I enabled windows restore points on all my drives and now it's using more ram? The HDD is pretty new. (good thing I did enable it though cause I was messing with some files/registry setting anywayyy I need the revert thingy in my life so if you would please be kind and tell me things I don't know about Windows 10.)
*The Python code has been running some intensive simulations for a day and still has one day to go
*This happened when I was syncronising with the Monero network about a week ago, but after restarting everything was fine. Windows Explorer is a mysterious thing...
Thank you for your time.

 

[CountMike]

2.9 GB of RAM is neither unusual or too much for W10 or even W7 for that matter. It also greatly depends of background tasks.
W10 also uses memory compression so it may look artificially high.
Some programs/games may not release all memory after shutting them down or leave a process running. There are also cases of memory leakage from some drivers so you may want to look at that.