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The spider webs are otherwise known as oozing, whiskers. It can happen because a number of reasons.
The most important reason in the retraction distance setting. it determines how much plastic is pulled out of the nozzle. In general, the more plastic that is retracted from the nozzle, the less likely the nozzle is to ooze while moving.

A second reason is the retraction speed. Retraction speed determines how fast the filament is retracted from the nozzle. If you retract too slowly, the plastic will slowly ooze down through the nozzle and may start leaking before the extruder is done moving to its new destination. If you retract too quickly, the filament may separate from the hot plastic inside the nozzle, or the quick movement of the drive gear may even grind away pieces of your filament.

A last reason can be simple that your temperature is too high, and the material becomes too fluid.

I hope that helps.