How can you chose your university in terms of the difficulty of the education?
International students should go to universities where there are less international students, the reason for this is that the international students could also be struggling just like you. Malaysia students are very friendly and they are good people, they are some international students that can not get a long with locals but if you get to know the Malaysian students they are very good people. Malaysians can help the international students with their study, usually Malaysia students love to study in a group because they know that group study is very useful and very effective therefor they will ask you to join. If you think you will have difficulty with your study the best choice will be university that has a lot of local students.
The accent of the lecturers can also be a problem for some of the international students, most of the international students that come to Malaysia don't understand some of the lecturers accent, and this can be problem for some of the students because if they can't understand what the lecturer is talking about then they will not have any idea about their study. Some of the universities are aware of this problem therefor they mostly employ lecturer who have PhD qualification, if you are in the university that your lecturer speaks in accent that you can't understand then the best thing to do is to ask the lecturer to explain again and to speak in a way that you can understand.
It is important to study in the university or college that your are happy with, don't look at the university ranking only, look at the other factor that could have great impact in your studies. It doesn't take too much of a time to make research on the universities, google all the universities that you want to study and try to match them with your needs and wants. Make sure that the university you chose match your needs and wants otherwise you will end up changing your university which will cost you more.