Im working with TOAD since 1998 yarrooooo!!!
I havent seen this before.
hangs very frequently... (trying to put an exact time on it but not seeing a pattern, at least every few minutes).
I could have whole sentences written out, nothing on screen, wait 3-4 seconds and then the sentence outputs. Ive a stopwatch app opened and theres no pattern, could be every few minutes, could be every few seconds.
No other app on desktop affected, only TOAD.
Disable all object name highlighting in editor options.
I remember a long time ago I could output everything that the editor was doing in a code debug window so I could track everything it was sending to DB but cant remember how to do that if anyone knows.