I need a fast and frugal renderer

[Travis Cobbs]

LDView reloads completely when in polling mode. This could be fixed, but would require a lot of work due to the fact that changing settings in LDView can also force it to either reload or reparse. Adding file-changed reload logic into the existing settings-triggered reload logic is a lot of work. Also, I the polling currently only pays attention to the top-level file, and while it would be nice for it to pay attention to all loaded files and only reload the ones that actually changed, that's also a lot of work.