I have literally no idea why this is happening. I have lately installed some Android emulators, which I thought would be the cause, but I am not able to completely identify it. Closing them seems to fix the issue, but it's weird it happens both with BlueStacks AND Nox, and RAM usage in task manager only shows a fair amount.
After closing Nox, only 3.8 GB were in use, but the process in the task manager never went above 600 MB of use.
Some specs (I don't know how to post them properly):
OS Name Microsoft Windows 10 Home Version 10.0.17134 Build 17134 Processor Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz, 1800 Mhz, 4 Core(s), 8 Logical Processor(s) BIOS Version/Date American Megatrends Inc. UX430UAR.300, 10/6/2017 Installed Physical Memory (RAM) 8.00 GB Total Physical Memory 7.86 GB Available Physical Memory 4.04 GB Total Virtual Memory 14.6 GB Available Virtual Memory 9.80 GB Page File Space 6.75 GB Page File C:\pagefile.sys
I'm not sure, because I'm no expert at all in this, but if Available Physical Memory looks too low, it might be because some time ago I may have allocated some memory to the Intel Graphics thing to play a couple videogames (I think I did 3.5GB or 3GB).
Indeed, adapter settings show that:
Total available graphics memory: 5048 MB Dedicated video memory: 1024 MB System video memory: 0 MB Shared system memory: 4024 MB