Last year I was a masters student (MSc Management). Majority of the modules involved group work. Often times I found it extremely difficult, if not impossible, to communicate with my teammates. They would often confuse very basic models/terms and their emails, WhatsApp messages were intelligible and riddled with errors. However, when it came to producing the actual assignments the standard would be incredibly high. I understand people perform differently in different contexts in how people perform varies in different contexts but I just can't believe there was nothing untoward going on. AIBU to suspect there is widespread plagiarism occurring at universities among rich, international students.
Just to note I am not bitter nor resentful. I have watched many international students agonise over assignments.