The script error was corrected on the day of release and a new version was pushed out.Yes, the improvements are visible. But webm shouldn't be the reason for the bad resolution. Do you render your animations directly? Have you ever tried to render the animation in high quality single images, and then create a webm out of those?
Now let's be honest... it was already noticable that you put work into them so there are no clipping textures (like in Honey Select, when the Male looks like he's dry-humping a hologram, because the female skintexture doesn't have an opening for the dick and it just... phase-shifts into her body). They were just rugged.
*EDIT*
Just noticed something else: Don't get so hung up on filesize. Average size of a game with that many Animations is well over 1GB. Yours isn't even half that size.
*EDIT END*
Oh, and you have a Script-Error in Line 330 of chapter_6.rpy. You misdeclared a paragraph-pause as {p-0} instead of {p=0}.
I know I shouldn't get hung up on file size, but I DO, I can't help it.
Yes I render them directly at 1280x720, DAZ output them as .avi files, and they look pretty good (to me as their creator at least) then convert them to .webm files with Wondershare's Filmora (I can't give you file size comparison I'm working today (on a Saturday : for IELTS exams) yeaaaahhh) but there is a substantial size reduction. I don't know how to take single images and create an animation from them.
I have never used Honey, but I do know what your talking about.