champ select super laggy

When I began playing league again in septemberish my league ran great I had no issues but as I continued to play somethings started to lag most specifically my champ select. I'm not sure what happened bUT it became so glitchy and doing thinks like changing runes, wards, spells, etc us very difficult. When I attempt to ban a champion it became a constant struggle that it freezes at around 5 seconds. Also, when I try to change my skin if I was gifted one it says everytime that the skin selection messed up and it won't let me choose the skin the first couple games I try.