crackling sound coming from macbook pro usb c charger

As soon as I drop Aalto on a MIDI track, with the Default preset, it jumps to 40-44%.the meter moves between those percentages. When I open Live with nothing in a set, my CPU meter sits at 2%. I am also using a MacBook Pro Retina 13' early 2015, running El Capitan 10.11.6. I too am having big CPU meter increase with the new Aalto 1.8.1b1 (AU and VST).

My soundcard is an universal audio apollo 8 (thunderbolt, latest version) so really everything should be running really smoothly. the crackling stops if i start using a bigger latency (256 onwards) but it find hard to use it in a big project with other plugins running if it crackles so easily. If i open two instances everything becomes more evident. if i just open a polyphonic patch it creates crackles in the audio,after a few minutes the cpu level decreases and the crackle stops. If i open one instance of aalto cpu level in logic climb to 100% and stay there all along. Macbook pro retina 13 inch (early 2015), 8 gb ram, 256 ssd hard drive. I'm using logic pro x 1.0.2.1, with everything else closed (nothing else running on the computer)

Here's a screenshot of the environment right now: I'm a user of the demo version, just downloaded latest demo version (1.08) and i have heavy spikes. Hello, just created an user to reply here.

Crackling sound coming from macbook pro usb c charger