Why does my laptop use so much memory right after powering on?

I have an ASUS laptop and I am trying to figure out why the memory usage is always very high: 93-98% all the time.

Below is usage after restarting and opening one Firefox tab:

I see that there are numerous instances of java.exe running eating a huge chunk of memory. Anyone know what the program is and how to disable it?

Startup program screenshot:

My RAM is 10GB + 2GB taken up by AMD GPU.
Windows 10