Also tested on Dell XPS 13 9360 with QCA6174 adapter. I am no longer experiencing loss of connectivity when performing group rekeying.

BZ#1492161 WiFi Instability on Dell XPS 13 With Qualcomm Atheros QCA6174 Wireless Network Adapter
BZ#1491708 wpa_supplicant// wireless connection stops working after second rekeying

Works on optiplex 980 with i5 650, dual monitor using vga+display port. Used to flicker on moving the cursor from one display to the other. No longer the case.

BZ#1313318 X/Intel display/Regression: flickering display on 4.4.2-301
BZ#1310252 kernel-4.4.2-300.fc23.x86_64 causes screen flickering