Photoshop scaling

The issue below was noy solved by la last update (version 3):

Under these circumstances, I will have to uae the plug-ins from LR rather than from PS.

If so, 2 questions:

(i) what are the drawbacks (if any) of using Nik Collection from LR (as opposed to PS)?

(ii) should I install the plug-ins in the LR folder durind installation (the default folder is PS), or it doesn’t matter?

Thank you,