The low rating is for the cashier and not the food.
I actually love the kimchi fries and bahnmi/baos here. Kimchi fries is a must each time I go. food wise, definitely 4/5 stars.
However, this specific location's cashier is a bit of a pain. I'm referring to the Asian girl who works cash. She is expressionless, does not make eye contact when taking orders, and has screwed up my orders on more than 1 occasion. I'm sure it's not due to being new since she's been there for a while, but the general vibe is that she's not friendly at all and doesn't want to be there. Definitely the last type of person you want to be greeting your business' clients.
If you have to go here then go, but I'd recommend the location at Queen/Spadina. Went there yesterday, everyone was super friendly and an overall positive experience.