Bad wifi signal on Android 6

I flashed factory image of android 6 on the day of the release. I've had worse wifi signal than I had on 5.1.1, a very notable change. In my wife's nexus 5 I waited till the ota update, and thwtthat phone doesn't have the same issue. I've tried flashing the radio from 5.1.1,but didn't see any change. Anyone with some ideas of what could be wrong, oror how to fix? I also refreshed to stock 6.0,and performed factory reset. Nothing. Any help?

I'm at like 60% signal when sitting next to the router.