Google extract data connector doesn't work with calculated metrics such as cpc, ctr etc.

[losdecline]

I'm importing data from google ads into Lookerstudio and to speed up the process I'm using google extract data connector. 

It works fine with metrics such cost, clicks, impression but when it comes to calculated metrics like CPC, CTR, Conversion rate etc., it fails and shows numbers completely off. 

I tried using calculated fields both in connector directly and google ads but nothing seems to be working. 

Any help on this?

Thanks,