效能表現通常會冇咁好呀
Efficiency is usually not so good.

Cantonese Sentence Breakdown

效能 haau6 nang4
(noun) Function
表現 biu2 jin6
Performance
通常 tung1 soeng4
normally
wui6
a moment (Taiwan pr. for this sense is [huǐ])
metropolitan
gatherings union
to meet
to catch up
mo5
to not have (Cantonese)
Mandarin equivalent: 没有méiyǒu [没有]
gam3
so (Cantonese)
Mandarin equivalent: 这样zhèyàng [这样], like this
hou3
to like
to love
to be fond of
to be liable to
to be likely to
haa1
(particle equivalent to 啊 after a vowel, expressing surprise or doubt)