Crackling sound on preset changes only

Hello there;
I have an optimization question for Nolly
On my laptop for live play, the sound is amazing.
Issues is : I have a small Crack but only when I change preset (switching from clean to crunch for solo).
But the indicator (cpu and ram usage) aren’t getting in the red. But still the crackling is noticeable.
I’m on a 8go ram, 2.70ghz 4core cpu.
The crackle is like the volume is too high and quickly taken down.
I ve done almost everything neural says about optimizations (windows sounds, disabling themes and so on and so on…)
Thx in advance for clues!