It really depends on your age/maturity in learning. To me the subject/masechta doesnt matter as much. If this chavrusa is causing you to battel/waste time than of course it is better to learn on your own. Otherwise I feel that there is a lot of value to learning with any chavrusa regardless of level of intelligence Mikol Melamdai Hiskalti etc. This is question is really more dependent on your level of learning and your personal situation and I would advise asking a rebbi.
I have no problem with women responding to this thread – this is a public forum and I am sure the op anticipated that. I would have no problem discussing this type of thing with my wife.