Growing RAM usage during installs- Windows 10

Hi all!

I have had this issue for quite a while. I'm running Windows 10 with everything up to date. The most recent Nvidia drivers, etc. 

The problem I have is this: When I download and install files such as MSFS or Orbx scenery through Orbx Central, my RAM usage slowly keeps creeping up. If I install enough items or big enough items, the RAM usage eventually gets to 100% and the computer becomes non responsive. So, as an example, after doing a clean deletion of my P3dv4.5 a while back, when reinstalling all my Orbx scenery through central, I would have to restart my computer after installing 5-10 sceneries to reset the RAM because it had crept up close to 100% usage and would not come back down. When I try to download and install large things like Orbx True Earth UK or now, MSFS, I usually have to stop part way through to restart the computer to reset the RAM and then continue the download and install. Luckily, that seems to work pretty well... But it is very annoying.

But, this problem doesn't seem to happen when downloading an entire installer. So, for example, downloading the entire P3dv4 installer or sceneries from other vendors and installing them doesn't seem to cause this issue. It seems to only happen when using installers like the MSFS one and Orbx Central where the program is downloading and installing at the same time.

Does anyone else have this problem? Anyone know why that is?