First, understand that these messages are very old, and Claymore doesn't change them (note the drivers they indicate to use).

Adding 16gb of VM, may increase stability; but it also will require using a larger usb, and a much longer download.  As not everyone mines ethash, this is not the optimal choice IMO. 

Later on I will look into dynamically enlarging the primary partition or making another to use as VM if there is enough space on the usb.  After I am done with v0019 and a new rxOC I will do this, I or someone else (there are lots of knowledgeable members here) could make a guide for modifying nvOC to have 16 gb VM to use for Claymore.

It is important to understand that it is not clear if adding VM or more RAM to the system has a direct correlation with increased system stability.  IMO using 8gb of ram is more stable, especially when dual ethash + additional algo mining; however it is almost impossible to isolate / measure stability fully and I am very skeptical of anyone who claims to have a definitive answer on this.