Sensory overload is part of the experience of having autism, and one of the reasons why many of us tend to seclude ourselves.
We filter less from our world and this causes us to get too much information. This happens because we have less synaptic pruning, resulting in MORE connections.
Too much sensory input comes at us at once, and our brain says WTF!

Camouflaging is an adaptive and resourceful strategy to deal with social difficulties. Autistic people report that camouflaging can aid us in achieving goals such as getting an education and holding down a job or establishing relationships—perhaps in particular with non-autistic people.