The framerate itself is an objective measurement, but the word "issues" is a subjective assessment. If you want to provide facts, say what the framerate is, do

The framerate itself is an objective measurement, but the word "issues" is a subjective assessment. If you want to provide facts, say what the framerate is, don't say that there are framerate issues. To continue my comparison, it is a fact that a certain reviewer assigned the game a certain score. Whether that is indicative of the quality is opinion, as are the reviews themselves.