If a junk of TeX-input is inserted via a paste command, TexWord processes the complete paste buffer, before an update of the output window is initiated.
On the other hand, TexWord processes only the first character in the type ahead buffer, not the actual buffer content, before an update of the output window
If the update is compute intensive, e.g. if the preamble is edited, or the page contains a complex tikz or pgfplots graphics, or TeX processes the last or first
lines of a page, this behaviour results in an awful response to the character input via the keyboard (>2 seconds per key, even on an actual MacBookPro).
Emptying the type ahead buffer, before an update cycle is started, i.e. processing the full content of the buffer in the same way as the paste buffer is
processed, would result in a sizeable speedup of TeXWord and would be a great benefit for rapid TeX-typers.
(The workaround, which involves typing a long text into a simple text editor, and using a copy and paste into TeXWord or switching intermediately to the
Bakoma Text Editor, helps, but cannot be the last word from Bakoma.)