[Q] crashing, glitching and lagging nexus 5 after update topic

I feel like throwing this sh*t phone against the wall!!! After yhe 5.0 update, this phones been lagging, glitching and crashing like a b*tch! If i try to open an app, for example snapchat, it will open, than crash 3 or 4 times than it will work. If i need to type something, the keyboard thing comes up after 10 or more seconds. A temporary fix is restarting the device, but i am looking for a permanent one.