How is with payments ? I receive small payment and then i mined 60 RVN and still didnt receive my coins, is it after 50 coins i should get it ?

Hi guys, I ma new to all of this and I have some questions. I saw voskcoin video and decided to try this.

First question, I downloaded the Nvidia package from his link, now there is new version of trex 0.15.6. How to update to new version ? Should i just copy my bat file to folder with unzip version 0.15.6 ?

Second advice on OC, i have gtx 1070, with msi afterburner i did oc to clock +150 , mem clock to +800 , power limit 75. According to hwinfo my gpu is taking ~170 W. My hash is 15 to 15.5 MH/s . Whats your advice on it ? I was reading that some people put mem clok to negative values, is this good aproach ?

Thanks