Frame-by-frame quest name with rapid opening and closing of menu

I have high performance mode enabled and frame skipping.
Upon entering a realm rapidly press Q to open and close the main menu.
When this is done during the quest names appearing the fading pauses about every 2-3 frames or about as long as it takes the menus to open and close.

This also sometimes happens with spell animations when rapidly pressing E with turbo mode.

Win 10