I do not know the background of your case. I give legal reply to your question. Where to file DV case? DV case can be filed from the place, where the marriage was olemnized or where respondent(s) (husband and relatives live) or where the parties lived together or where the wife is living at the time of filing the case. So you can file the case from where you are living. Now, before whom the DV case has to be filed? You can directly file it before the magistrate (it is the best option). You can also file a complaint in the police station or before the service provider (NGO). But they will take their own time to send it before the magistrate. So, better you can file it before the magistrate either in person or through an advocate.
Now, which is better option - to file DV or RCR, for the purpose of peaceful living after one year of separation?
RCR is not at all option in your case. Most of the times it is felt that RCR gives no relief toany one except the erring spouse to use it as a launching pad to get divorce one year after obtaining the RCR decree. So, it will not fetch any peace, either you win or you lose. So forget about it.
About DV, the reliefs it provides can be categorized into two- one ameliorating the financial distress by getting maintenance, compensation, medical expenses and educational expenses and also residential rights. The second one is preventing the physical and mental abusee by getting protection order. If you are being continuously harassed by the spouse and his relatives either physically or mentally and you are not allowed to live peacefully, as a prevention from such harassment, you can invoke DV case.
The purpose of RCR and DV are different in nature, it is not useful for you to compare that which case can be deciced expeditiously. For the sake of knowledge, I say that DV cases are quicker in disposal.