ipc freezing

So I have one of the very first ipc's and now it is getting worse, freezing during a look for 1/2 a second and then continuing. I have been doing a show the past 6 days with 500 cues and 50 moving lights across three worlds, and latest software update. It has glitch at least 30 to 40 times during each show which is embarrassing to me. Any Ideas?
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