[Gameplay]Extremely gameplay disruptive Jayce graphical freezeup

When a Jayce in vision anywhere on the map OR when playing as Jayce transforming into Hammer stance causes around 1 second of graphical freeze or hiccup (extreme FPS drop). After the freeze everything "teleports" when the client catches back up to actual gameplay. Transforming out of Hammer stance causes no delay.

Steps to reproduce: Play as Jayce. Transform from Gun stance into Hammer stance.

Note: I have posted this before, however since it is a new patch (again) and since this does not seem to be an isolated issue, I am making a new discussion. New information sourced from a game today (2016/03/26) where everybody was experiencing this issue, including the Jayce.

Additional note: Steps taken/changes that happened since first finding this bug: -Client restarts -System restarts -Client repair -Patch 6.5 and 6.6 hit.

Additional personal comment: This is EXTREMELY disruptive and confusing to play through. It might not be game breaking, but it comes close in my book.

EDIT 2014/04/02: Another game with jayce, error still persists. Still extremely disruptive to normal gameplay.