using a low pass filter with a freq of 250 eliminates all fuzz for me, but makes the sfx very very quiet.
only way i could think of combatting this was by chucking an overdrive effect on (lol), which sounded ok in the simulator, but clipped a bunch on the playdate itself
see example of quietness here: https://photos.app.goo.gl/dNfWBcmSua8RBkgd8