I'm so very sorry to hear that animations aren't running somewhat smoothly for either of you so far, especially if you're using it for either your current VN or the one you're making later on in the future. Although even if that might currently be an issue right now, I believe that no matter what, despite how long it will take to work out the bugs in the animation of the VNs that you're both working on, which are either current or planned later on that will soon change as both you and your partner continue to work together and make both your recent VN and your future one bigger, better, longer as well as much more remarkable-(extraordinary/exceptional/astonishing/astounding/marvelous/sensational/stunning/incredible) with any new lore and world-building that's added onto it. That includes but is not limited to your projects, possibly having a deep plot and a very intricate backstory setting for any characters you might have plan to appear in any or all projects you both make together later on in the near/far future!