Will a web browser be able to play a huge open-world RPG, over a gigabyte in file size, aimed at computers with a minimum of 512mb of VRAM on their GPU
Wow. That's a crazy big game for a tool like Construct. It's so big, an EXE exporter probably won't save you. You probably will have to use traditional programming tools to pull that off as an EXE, it's definitely far, far beyond what Classic can do.
We aim for C2 to be able to make big games, but wow, I thought 100mb was about as big as anyone would ever get, ever.