FPS drop caused by CreateFrame("PlayerModel")

[LudiusMaximus]

After some thorough testing, we discovered the following:

Whenever the FPS is capped by the CPU (GPU usage < 90%), just having

local modelFrame = CreateFrame("PlayerModel")

in your addon (no further code required) results in a ~7% FPS drop.

I know this is a real corner case, yet it would be great to get around this.

Anybody any ideas?