I hate how every Evil Within thread becomes a dispute over it's quality. It's been well established, on and off GAF, that Evil Within is a huge Love It/Hate It game. Some adore it, some loathe it.
It's just that every TEW thread turns into this, some people arguing how bad it is, and some people loving it, in almost a 50/50 split. It's all in taste, just people need to accept Evil Within is neither a downright terrible or a downright amazing game that is loved/hated by all, it's a game that sits in such a place that people seem to have strong emotions towards it, whether positive or negative.
I think being able to inflict such a rabid and split response is a lot more interesting and speaks a lot more for how unorthodox the game is than if it was just alright to everyone. It's truly one of the biggest love it/hate it games I've seen in years, and that split comes precisely due to how it handles itself, which is hardly by the mill and has design decisions that some will love, some will hate.
Was the performance issues ever ironed out?
I understand people still complain about it but did it ever improve from what it was at release?
Performance was improved on PS4/Xbox One/PC I know, and on PS4/Xbox One they did some big performance boosts in the update where they gave people the option to remove the black bars. Can read a lot of response to the patch in this thread:
http://www.neogaf.com/forum/showthread.php?p=169475705
Along with giving people the option to remove black bars, the patch also had severe performance boosts on consoles is the baseline, though.
Damn it, i just bought it yesterday.
Your in luck, this thread is almost a year old and still no word on it. So it may not be happening (a shame, since I think the DLC is worth experiencing if you liked the game and know what the DLC has in store).