Fix for this as far as i've noticed is to attack a hostile bug and defeat or lose its aggro. If you have the custom setting for bugs to ignore you on then you have to turn it off and fight to fix.
If you guys are on pc and are looking to reduce this you should lower your graphical settings all the way and try to slowly approach the black ant drop off point in the water near the garbage. I was able to get rid of the over 500 apple bit pile they had made and the stuttering was gone. They do still add to it every day so I have to drop in now and then to clear it.