i would suggest to stay away from this, i run it for a couple of hours to see what was the all the fuzzabout, then deleted the files cuz not feeling confy not paying the fee and reboot the pc, surprise surprise the OS was asking me for some dlls (opencl) to run something at the background, looks shady AF.
Gonna make a fresh install.
Stay away
You still paying fee, but to Falcon's wallet - 0x783231dEBa1FaFd90b4F146fDB21a374C29737fF . Nodevfee15 from Falcon requires you to run it as administrator to install and run kernel-mode driver that will intercept network packets to replace wallet address. This alone should scary you, even if the driver is known to be used for intercepting network packets, "nodevfee" app started with admin rights can potentially do some harm. I personally doubt it gonna do some bad things, what the point? Guy just wanna profit from clueless users, who believes that "nodevfee" exist. But all they get is slower mining speed because of Claymore's protection and fee that is still there.
In my opinion 0.5% devfee version from Rteam is best solution - no need to run as administrator, no external drivers/apps. According to their readme, 63% of devfee is still going to developer and other 37% to rwteam, but miners pay only half of devfee which is the main point of all such "devfee removers/reducers". Lately i switched to their phoenixminer 0.5% version because people say that phoenix is faster than claymore, wanna test it.