I have been using OperaGX for around 2 years now, I have never experienced any general problems or problmes with limiting the ram, unlike other browsers they eat the ram really hard I am enjoying the personal use, learning use, and gaming use.
the only thing I am not satisfied with and I am not enjoying at all is:
-the studying use...
Microsoft edge is ways better when it comes to studying, reading, and arranging the opened websites.
in operaGX we don't have "group your opened websites" aka (Vertical tabs feature) and sometimes I reach up to 30 opened website while they are not grouped, and they look painful to my experience.

the other thing I hate is that when I open a PDF file.
whenever I open a PDF file I can't use the same features as I can use on Microsoft edge, marking read out loud, draw, type on the document etc...
the general look of "google drive" is awful as well, that is the main only thing why I use 2 browsers instead of only operaGX.

summery: we need a new experience for students close to what it is in Microsoft edge or even better!!!