I'm gonna try and break this down. I'm by no means an expert on the industry (I don't read Japanese so I can't be) but this is a real thing I see amongst Western anime fans at every turn.
The concept of "Budget." This is a gaming forum. A primarily American gaming forum. I can totally see why people would ascribe such power to budgeting, because more money = better looking product. That makes sense. But you'll never see people actually elaborate on why its an issue or a positive. I'm not going to be too critical because like I said, it's actually quite hard to get any concrete information on anime because nearly all of it is in Japanese and you have to look for it anyway, but for whatever reasons - regardless of where you go - the Western fandom has locked onto budget as the God of all that has ever happened for anime. Budget giveth, budget taketh away. As far as I know boards like 2ch don't ascribe to this.
Go into any thread after a good or bad episode of an anime and you will see -
First off think about how that actually makes no sense and that's not how budgets work. "We're going to spend xxxxx amount of Yen on this episode so we won't spend that much on the next one." That's not how anything works. Want to know the real reason that episode looked better? Maybe check the staff listings. If you can't read Japanese or they aren't translated, maybe look for people on Twitter or sites that track that kind of stuff. I'm going to use the last JoJo Diamond is Unbreakable episode as an example because it aired on the same day as Berserk - people said the episode looked weaker and what do you know, all the key animation was done by
one guy. That's impressive on its own. That's the kind of "budgeting" you'd actually see, having more talent or less talent on an episode because others are working on the next ones.
As for why the studio went for the awful CGI look, that's probably what the production committee wanted. Perhaps Berserk is meant to be a training program for the lagging Japanese CGI scene, much like how King of Fighters XIV is being begrudged because it doesn't look very good. KOFXIV looks like crap because SNK wants to start training their staff that are already experts on 2d art on 3d art because that's where they believe the market to be headed.
I'm sure a lot of people in here watched One Punch Man, which has amazing fight scenes. It looks pretty mediocre on average, but those fight scenes! So it must have a big budget right?
No. The director states that OPM has a strictly average budget, and its due to the passion of the staff that they achieved the highs the show had. Anime is a very passion driven business - if you weren't passionate about it you'd get another job.