There are no limitations as the images are exported from LR into Photoshop as PS is a pixel editor then imported back into LR catalog. You have the added advantage of being able to use Smart Objects in Photoshop to give re-editable filters.
Some of Elements' processing is limited to 8 bit rather than 16 bit; so it's possible that (if the OP is pushing 16 bit tiffs to Elements), this limitation might impact on quality if there's a lot of PP being done on the files...
I've had a few glitches in the quality of the photos after editing in Elements and then bringing them back to Lightroom.
Unless you describe the "glitches", there's no way to be sure the problem is Elements and will be solved by using Photoshop.
There should be no "glitches" using Elements, and most people who use Elements with Lightroom do not have "glitches"
That must be why there had to be a change to the image before I could edit in PS Elements. Looks like it’s not much worth trying until I’m using PS with the real Lightroom. Thanks for the thought.