My client is calculating differences for no reason
I was playing one of my promos game when LoL crashed. Then, i closed client and oppened it again but it started calculating differences, over 5000 files scanned and still counting. My net is fine, I played with no issues before this game but now I will possibly be reported, loose my promos and get a leave on my match history. I would like to know what is going on and how can I fix it.