・・・・おいおいおい、奢りとわかったらリミッター解除ですか二人とも。

・・・・、。

...Hey, hey, hey, the moment they find out it's my treat, the limiter comes off for both of them?

Literal

...Hey-hey-hey, treat [quotative-と] understood-[conditional-たら] limiter release [copula-ですか] both-of-you.

奢り 'treating someone (to food/drink)' — a common social concept in Japan. リミッター解除 'limiter release' is a gaming/mecha metaphor applied humorously to eating — 'they removed all restraint.' ですか with no polite intent is sarcastic exasperation. おいおいおい is a tripled interjection of disbelief.