I have made a special mining OS for polaris cards, as well as those supported by Driver 20.40.It has inside what you are asking to check the hashrate and mine the most profitable. Supports zergpool,zpool,nicehash. I currently have it in Zergpool with an RX470 8GB card with micron memory. He makes 10 cents a day approximately... for stats https://zergpool.com/wallet/43z8ZeAi54kQs4g8tUqxzp23THHzCsgZRL8WWEN8MFNpQpBNbhzsrKX5xJrtbFbwiKA5vcYHxk4zxfTPRk2TsWdoGrhKC1y
 But I can't make it available because I can't provide support. I'm not a professional and I don't have a support team.as I watch miningOS in general I see that it has a lot of work to do to support such software!it takes work every day. Also the code for Multialgo numbers about 3000 lines where it works with the operating system for hashrate, overclocking 5 in number and I do not want some well-wishers to copy them. All the work is done by the browser as it has a page but only with local access!!! If at some point I make a USB locked, maybe I will have it. Surely there are other software, and creators simply do not make them public for their own reasons.For now you can use Hive to mine popular coins. In nicehash with these cards you can cut 3 algorithms. kawpow,autolykow & fishhash. Currently, all other algorithms have very low to no profits. (Basically the profits are low for everyone). But because your cards are 4 gigabytes, you can cut the fishhash if I'm wrong. In Multialgo it wants cards 8GB and above because it changes currencies and some have big DAG file.
I have a way to drop consumption on polaris cards but you need to know from bios editor.and I don't mean to just press the(one click)!! You will have to change the dynamic voltages that are next to the clocks!! if you are interested some, i can make a txt for what numbers to put...