So I had spent almost 500 hours on 3 different characters in Skyrim. Then I took a break from the game shortly after update 1.4 arrived. Then I started playing again after some time, and by then the 1.5 update had been released. So I continued with my most recent character and nothing too strange was happening at that time. But after some time with my character I decieded to start a new one. That's when [censored] started happening. Almost from the first moment I started the new game I was noticing some strange glitches, but nothing too serious, but now after having spent 60 hours on the new character my playthrough has been glitch after glitch after glitch. I don't seem to be able to play the game for half an hour without noticing some sort of glitch. I had a dragon freezing on the ground and not dying, some people I have to follow during a quest disappear and reapear at some non-reachable places and seem to be stuck there, the game has been freezing alot at some random placese and also the framerate seems to be alot worse now with the game lagging way to much. Oh! also many times the trigger buttons (R1, L1) don't seem to work at some random points, I will be trying to cast some spells, pushing either R1 and L1 together or even just one at a time but no spell gets cast, this can happen just once every time or stay this way for a few minutes! (Bought a new controller and still having this problem) These are just the glitches I recall right now, there have been alot of different glitches or bugs along this new playtrhough.

Now I had some glitches during my earlier playthroughs, even one that hindered me from finishing a quest. But these glitches were kinda rare for me considering what other people were experiencing, up until now. The worst glitch, and the most annoying, I am noticing is that all the followers in the game are glitched to peaces. They start out allright but soon enough the will simply stop fighting and seem to not give a [censored] if an enemy is attacking, they will just stand there and take the attacks, they have even taken up freezing in place and not responding to me or anything at all.

I have tried deleting game data and the update and re-installing them but nothing changes. Now I have tried searching the web for any kind of solution or explanation to these crazy glitches appearing all of the sudden after all these updates from Bethesta, but nobody seems to be having this problem. So if someone here can inform me in any way about what is happening, doesn't have to be a solution just some info on why this is suddenly happening, that would be greatly appreciated.

Now for a little rant: I love Skyrim as a game but this is just unaccaptable. It's 2012 and releasing a game now (released in 2011 of course) with so many glitches and bugs just should not happen. Shame in you Bethesta for doing such a crappy job on such a great game! it is really confusing!
Up until now I have considered myself lucky with the amount of glitches I have had, only because I have heard and read online that the game is virtually unplayable for some people, or was at least when first released. But having these glitches happen now all of the sudden just seems strange to me. Is it possible that the 1.5 update Is messing with my game??

ps. sorry if my grammar is confusing or badly written, english not my native language.