Noticeable frame stutter when using abilities

[wowregistering]

Noticeable frame stutter when using abilities, easy to reproduce using stealth on a rogue but happens with many other abilities.

1. go on a rogue
2. use stealth

Technical info:

Neuron 1.14.13 Retail 9.2

Only addons enabled are Neuron and AddonUsage

To be clear, it is not a constant 80ms/s it just spikes that high when entering stealth and using some abilities.
After logging in or afking for a minute it will settle down to an average of 6ms/s Doing a longer encounter like a world boss has it settle at around 25-30ms/s Does not happen if I remove all buttons except for stealth off my bar, maybe I just have too many abilities on the bar.