Corrupted

They are:
D.S -Dal Segno-
Majikoi A-2 English Patch

* DS Dal Segno . Has a holographic AI girl (she's an unlockable heroine too).
* There's also Planetarian .
 
If you want Nekogirls, just go play Nekopara already

https://vndb.org/c36024
https://vndb.org/c49124
Nekopara Series

Just tried it again for you on my desktop. Did not encounter this problem.
I think it might be your hardware. If it's too old (perhaps you are using a old laptop?) or something, then there's nothing much we can do. Only couple of things I can think of is try updating your GPU's driver or reading it on windowed mode.
Quick system specs of my desktop for your references
Dell P2214H Monitor
Intel 6700k CPU
Palit 1070ti Dual GPU
16G DDR4 ram
Windows 10 build 1803
 

@Corrupted
All 3 Da Capo main games doesn't have too much in common except for Sakura. Unlike, say, the rance series, playing the previous entries isn't a prerequisite and you can start with whatever entries you like (main series only).
However, I would strongly suggest (like chaosraven) that you skip the original Da Capo (unless you can read non-english VNs, then you may choose to read D.C.P.C which is superior to the only title, if only in one major way) as it's an extremely dated and relatively expensive VN.
The Mangagmer version sells for $30 USD. For this, you get an 9 years old VN which (obviously) has a dated engine. The story also tends to to be pretty jarring, sometimes cutting from 1 scene to the next with adequate explanation. The H-scenes are some of the worst I have ever seen in a VN. They are very brief and isn't incorporated into the story very well at all, and is next to pointless to the story in the routes.
The main thing is the route selections. There are a total of 23 (this from memory. Not to sure whether or not it's 100% accurate. Anyway should be close enough lol) scenes to choose from in order to go into a character's route and there are absolutely no indication which path leads into which route (This is not an issue in D.C.P.C however). I had to make a manual route MS word entry myself in order to go into a route. It's the first time I had ever done that and it's tedious AF (don't ask me why I didn't consult a guide on the net. I would like to know myself )
You can get a lot of other better VNs for a small topup to Da Capo's asking price. I suggest you avoid it

Da Capo 2 can be considered almost a remake of Da Capo 1, since story and characters are similar, just vastly improved. I'd therefore just skip Da Capo and go straight for Da Capo 2.

Ok I think that's what I'm going to do.
 

DC1, DC2, and DC3 are part of a series with different casts. Play DC2 next and finish with DC3.
That said, DC1 and DC2 (official translated versions) are inferior versions of DCPC and DCPC2 (untranslated as of yet).

As for Da Capo 2, more or less it's a sequel to the first Da Capo although if you more or less it's the same with the first Da Capo though. While the original Da Capo were definitely have the charm, if you've been bored by that feel free to skip it to Da Capo 2 after finished both of Sakura's and Nemu's route. Of course if you've been playing the first Da Capo and took the interest to another girls, then feel free to play the girls route. Hope that it would answer your question here.

Welcome to Fuwanovel, and I see that you'll gonna dedicated a lot of your time to finished many VNs at once. Feel free to take the rest though if you've felt burned out by VNs, and of course you can discuss any VNs that you've been finished here. I hope that you'll have fun here.
PS - Anyway as for the recommendation I guess might as well give a link to my blogposts here in order to recommend many VNs at once, and I hope that my recommendations would be helpful to you (Also I hope that you'll like girls love genre here).

hello and welcome!  good luck on your journey and do yourself a favor, dont make the mistake thinking that youll get vns done a lot quicker if you take a break from one and start another.  

It's one of my favorite nakiges, along with Da Capo 2 and Clannad. Though my favorite imouto type character is probably Mayuki from Comyu.

This is my golden year and I'm going to make the best of it! I'm honestly having the time of my life playing these games one after another. 
If you have a favorite translated VN that you want someone to read and talk about with, let me know <3.

Living the dream, aren't you? 
Have fun sharing your thought on the forums, seeing a bit of enthusiasm is great change of pace, the summer has been rather gloomy and slow around here. :3

Rules of the game:
1. Posts have the following format: VN Title: (One sentence about the VN in spoilered text). Example posts below.
2. Content within spoiler text may spoil any part of the VN mentioned in the title, but not any other VN.
3. Alternatively, you may quote/tag someone else's post and respond to it with more than one sentence. In return, they can quote/tag you back and respond in the same way with multiple sentences. (Like a game of tag, thus the name of game)
4. If you break the rules I will become a ghost and haunt you from beyond the grave.
 

 
 

Hoshimemo
 

I liked both Sachi's good end and bad end tbh. She is different, in her route yes, and a lot of her snark is missing but I didn't think it was that bad. That being said it wasn't the best route for sure. Makina bad end gave me nightmares that night though. I watched the good end first so
 

I thought it was better than her good ending
Did you play sachi's bad end?

I just finished it (and am riding on the high) and came back here to tell you it was fucking awesome (nothing below should be spoilers, just saying "it has this and this type of thing and they are good" but if you're super crazy sensitive to spoilers maybe skip it). The 3-5 untranslated lines didn't impair the story. The amount of garbled lines was actually very low, and I can't for sure even remember any. My opinion is only worth so much having only read like 15 VNs (you can see the list by clicking my VNDB link of course).

In my personal enjoyment ranking, I would say it's under Very Long stuff like Little Busters, CLANNAD, MLA, but way above most of the Long or Medium category that I've played. (Going by VNDB's definitions)
Despite being smaller scope than those big games, it actually had significant worldbuilding and mystery to it. It had the kind of multi-generational plot that I enjoy a lot, a story like The Watchmen is probably a good example of what I mean. I couldn't guess any of the plot twists, which reminds me of Key games. The boobs aren't ridiculously large; in fact there's a wonderful selection of small boobs. The loli characters are actually interesting, not ridiculous horndogs. 

The two things that stood out the most: The world building where I had to actively piece together the puzzles of how things work and what happened historically, and the imouto route which was simply fantastic. I had zero interest in "imoutos", but after this game I think I'll be specifically looking for more like it. 
What I didn't like, and this is actually a spoiler:
 
 

I didn't play Hoshimemo, so I don't know how they compare, however as for imouto routes in general (from the VNs I've read), there is one in WagaHigh and SakuSaku.

Da Capo has some routes that fit the bill.
Sharin no Kuni has you "taking care" of the heroines, but as more of a case manager.

D.C. has more than 2 heroines.