[CLIENT] CPU usage goes from 4-8% to> 45-50% on LeagueClientUxHelper.exe During Champ Select (7.3)

After updating to Patch 7.3, I have been noticing that after champ select starts my CPU pegs at 40-50% range until I personally select a champion. I noticed this in both unranked draft as well as ranked draft queues.

I am running Windows 10 on an i7-4790 with Geforce GTX 970, 16GB DDR3 ram.

Thanks!

Another edit, just to clarify this is on the new client.