UCI VS UCD Engineering school comparison with limited reviews:
Personally, I would choose UCI for CS and UCD for Engineering. Location and social life, hands down UCI. If you graduate with a CS major from a UC school, there will be plenty of career opportunity choices.
Do more research regarding the bad reviews at UCI. I’m sure a CS major is outside their Engineering School.
Congrats on being accepted into both UCD and UCI for CS! This is like choosing between a Mercedes AMG and BMW M class.