100% CPU usage during champ select?

I'm wondering if anyone has paid attention to the CPU usage during champ select. I recently started noticing, although admittedly I only recently started paying attention, my CPU usage will spike to 100% while in champ select, across all cores and threads. I wouldn't be that concerned, but I've got a 7900x. Is this a bug? What could the client possibly need 100% of 10 overclocked cores for? It's not a game breaking issue, I still load in fine, but for the two or three minutes in champ select, CPU usage is pegged. Anyone having a similar issue on a high-end system?
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