Okay, let me get the OP straight... he's

* Nerfing himself by willingly going Lone Wolf
* Nerfing himself by willingly not using summons to support this lone wolf setup
* Playing on HARD
* Doesn't even understand the system

And expects that this, all above, isn't actually HARD at all... and thus the game needs to be adapted to make this more easily playable. We all see how if this is made "easy" for the OP the entire game will be a supercakewalk for everyone like each modern RPG for none-nerfers right?
So instead of neutering the game to support a willingly gimped expert build, let's try;

* Not using Lone Wolf, but spreading the pain.
* Actually use summons. They are there for a reason. Especially complaining about stuns summons are gold.
* Turn down to normal or easy.
* Learn the system

PROBLEM SOLVED. And the game didn't even need to be neutered to modern game cakewalk mode. We all win!
Originally Posted by inc
I feel like the game is undertested or the testers are horrible or i dont even know what to say?

Congratiolations on just insulting many a thousand players of the Early Access. I'm sure they're glad to hear we all were horrible and all.
<.<
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my point here is that if anyone actually played the game he'd see that this is just not right and that certain classes (even enemies) are way more OP than other classes

No one here played Original Sin... of course not. Otherwise how could we claim we have no problems with it.
Also I want to saw 'no shit sherlock' on the other... especially with...
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and btw im a hardcore rpg player and also mmorpg pvp player so i can think outside of the box

You should be well familiar with the concept that mages are the most dangerous of all and need to be taken out ASAP. Basic RPG-gameplay really, not sure why a hardcore gamer is surprised by this.

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Why isn't there a double click safety system integrated?
Can't count anymore how often the cursor told me I would attack an enemy, then without even moving the mouse, the cursor jumps to movement the moment I click and I just walk somewhere without attacking, often getting opportunity struck.

If you notice it's doing something wrong, click the right mouse button and your character will instantly stop. If you're waiting for them to finish an improper movement command, it's not the game's fault. You can't loose more than 1AP to this if you're paying attention.
Doesn't mean it can't be improved upon, but it's definitely not as bad as people make it out to be.
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I'm not far into the game but I bet I can boost the list of bugs, inconsistencies and unfinished parts of the game to 10 full pages, in a week of playtime.

Well, here's my challenge to you... DO IT.
I've posted extremely long topics with bugs on the beta (and again now), but 10 full pages, no I could not. So, give it your best shot... show me (us) how it's done. Note down all the bugs you find in a week, and see if it makes a 10 page report. We and Larian would all be grateful for your work.
Of course I know you wont, or if you try you wont get anywhere near 10 pages... but feel free to prove me wrong on that.