fillet trouble

 From:  telnoi
1700.9 
well, i've managed to clean it up partly and perform the boolean operation, but my pc crawls down to a halt when it's done.
the patches don't even look that complex.

I have attached the finished boolean operation of one section that will be itterated using a an array and the complete ring without the boolean operation applied. I'm not sure where to go from here, or if this could be improved?
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