When starting with a new script, the performance is as usual. But when working with a larger script (>200 lines), the editor works extremely slow. It takes more than a second for each letter to appear! It's a real pain to code like this!
Editing the same script in a notecard doesn't show that problem. It works as usual.
Editing the script with the LSL compiler selected also works as usual. The problem only occurs when the Lua compiler is selected.
I'm using Second Life version 7.1.12.14175675593 (7.1.12.14175675593) for Lua.