the name is compliant with packaging policy and guidelines. With respect to the conflict mentioned, when updating, you have to do both python-qt5 and python3-qt5 at the same time to same version-release (notice in your example, they do not match).
After updating to this, koji builds are failing... in particular, all my buildSRPMFromSCM tasks fail, apparently due to an extra / in git url. Here's an example, https://koji.fedoraproject.org/koji/taskinfo?taskID=13389643 : git clone -n git://pkgs.fedoraproject.org//qt5-qtenginio ... => fatal: remote error: access denied or repository not exported: //qt5-qtenginio
I too see X seem to freeze for seconds at a time (even mouse doesn't move) in plasma session using intel driver. freeze was longest at initial login, for over 30 seconds.
Fwiw, did not experience these problems using modesetting driver (which I've been trying out of necessity due to regressions in previous intel driver update FEDORA-2016-606ca05253 )