This is perfectly normal when you connect a screen to your rig or do a remote session. Usually the GPU with the screen or that does the rendering will get a hashrate drop for a few cycles. This driver does it just like every other driver I have used.

I've been using this driver fix on one 470 rig for about a week now, no problem to report.

The only reason I'm not deploying it further, is the hassle of having to control voltages with a 3rd party software like AB or Trixx. I could do it through BIOS, but I just don't have time to go to all my rigs and flash all my cards. I'm waiting for a Claymore update to get this deployed further on my rigs.