The engine is lagging every time I type in the dialogue box. Other than that I am impressed by just how many features this is packed with.
Viewing post in Capsule VN Engine - a visual novel engine comments
This is a known issue in version 1.9.0 (preview reconstruction during typing, noticeable on large projects), fixed in version 2.0.0. Until the update is released, a partial workaround exists: reduce the embedded assets encoded in base64 in favor of referenced files, which reduces the size of each reconstruction.