Yea it's your vram. Because VTuber Plus is basically a video game running on the side so , with the whole encoding for the stream, the game itself and another game it requires some resources.
Made some adjustments that seemed to help work around this. Thank you for helping me walk through this. Honestly at this point if I had one other thing to say is it'd be nice to be able to save variations of commands and save them to new ones. Like having both a throw a single item command and throwing a bunch of items. Or even a specific item (like if I wanted to add a whipped cream pie to the throw myself and wanted a command to throw THAT specifically). Otherwise looking great so far. Looking forward to see what you do with this in the future.