Flew from Hong Kong to Kuala Lumpur yesterday, and passing through Ho Che Mihn's airspace, there was a female controller - I could understand perhaps one word in ten she was saying.
Fortunately I was flying so I didn't have to talk to her ...
I was sorely tempted to ask her if "Do you have another radio & voice you could try?"
Thought better of it though ....
Pretty much everyone else was having a lot of trouble with her as well.