Games crashing due to low available RAM despite 8GB RAM? (PC)?

[stando]

In the last week I have had issues with both GTA V and Rainbow Six: Siege, where the game would crash after 30 mins - an hour and give me a windows warning message saying 'Low Memory, Please close the game' (or something to that effect), it has happened four times now in one week. I have 8GB RAM and these applications are reportedly using 7GB+ which is ridiculous. I initially thought it might have been a memory leak in GTA V, but then I tried siege and it did the same thing. I did some research online and other people suggested it may have something to with my Samsung SSD but only GTA V is stored on there and I tried there suggested fix which did nothing. I have attached the event viewer log for the crash: http://imgur.com/BSkqQXt (The error code is the same as it is for the GTA crashes, the reported RAM usage is slightly different however).
Also here is some information about my computer: http://imgur.com/hUQB6m7
Any suggestions would be very welcome.

 

[Rabmac]

You can try altering the minimum and maximum size of paging file by following these steps:

1. Press Windows Key + R and put sysdm.cpl in Run dialog box to open System Properties. Click OK or hit Enter key.

2. In the System Properties window, switch to Advanced tab. Under Performance, click on Settings option.

3. Next, in the Performance Options window, switch to Advanced tab. Click on Change under Virtual memory.

4. Finally, in the Virtual memory window shown below, uncheck the Automatically manage paging file size for all drive option.
Then highlight your system drive under Paging file size for each type heading. For the Custom size option, set the suitable
values for fields : Initial size (MB) and Maximum size (MB). It is highly recommended to avoid selecting No paging file
option here. When you’re done with inputting your choice, click OK, OK, Apply, OK.

5. Now if you’ve increased the size, reboot is not mandatory. But if you’ve decreased the size of paging file, you must have
to reboot to make changes effective.

This worked for me when I was using Windows 10.