And other Ren'py games of comparable size and complexity don't have the issue.Probably yes. The problem is that while many people have evil lags of seconds, most don't experience any, so the source is unknown and thus a remedy is difficult. It has nothing to do with PC power. Some top shelf $10k gaming PCs which can run ultra ray tracing on Cyberpunk smoothly are suddenly stuttering while I had no problem with my dozen year old off the shelf economy rack.