I did check this after installing RTM on my home PC. Looks like the magnitude of the issue increases with the size of the volume and number /size of files on it. For example, when I first verified this with RC, I ran CHKDSK against a 500GB volume with lot of personal data, ISO images, WIM files and VHDs. The result can be seen here. However, after installing RTM build, I ran it once again against an empty partition of 500GB and the memory consumption by CHKDSK for ~35MB. To me, this issue certainly looks like a design bug. I have not seen a BSOD anytime. So, this is not as critical as others might claim.
Anyway, as more and more people start talking about it, I am sure MS will release a fix soon.