Cooldowns, Death timers, Recalls are broken. Please help.

My cooldowns, death timers, and recalls are inaccurate. Abilities will not work for some time after the cooldown is over depending on the cooldown of the ability(applies to summoner spells as well). Death timers will stay at zero for a few seconds. When I recall I star in the spot I recalled from for a fraction of a second. This bug has lost me a lot of battles and even games. I've tested it and it isn't that the cooldowns are skipping or starting lower. If i could get some help that would be amazing. TL;DR: My cooldowns, death timers and recalls take longer than the UI says. I've tested and the cooldowns aren't starting lower or skipping.