Disadvantage to using Nvidia Optical Flow?

Are there any disadvantages to using Nvidia Optical Flow?

When it first released (or added to SVP) it was said to have artifacts and other (minor?) issues.

Has the Optical Flow SDK been updated?  If so, has the quality been improved?  Does the GPU make a difference?  (ie. RTX 3080 Ti)

With my system I don't need to enable it unless I'm watching Virtual Reality videos which are often > 4K.