Hi @32259fl. No immediate guesses here, but I can see why Sense thinks it could be a computer.
Example of what a Macbook looks like while it’s charging below - similar frequent “choppy” waveform operating between ~40W - 80W.
It also looks like the waveform changes towards the left of the meter if you go further back - can you post a screenshot of what that section of the waveform looks like as well?