reduce number/data frequency

hi

I am wondering what is the best way to reduce a random stream of 0's & 1's if numbers are arriving at a number box very quickly? 1,0,0,0,0,1,1,1,0,1,1,0

is there an efficient way to filter out perhpas single number in every 3 or 4 numbers? Would a counter and a gate be a good idea? or is there a purpose built module for this perhaps? I tried (change) but sometimes only '0' is sent and therefore nothing is sent for until a 1 arrives.

the reason I ask is that i am sending these 1's and 0's to a serial module and my arduino is not keen. I have everything set too 115200, but it gets clogged up real easy : / So I thought best to reduce the flow.

thanks : )