It was running slowly because of the Tokens pane, not because of any sliders, and that has been fixed:

Ok, so I made an update that greatly increased performance of the live updating. It should now be able to tokenize it and display the tokens without any huge performance hit (if you get a big enough file you'll notice it a little bit, but nothing too big, I think).

It doesn't update until you stop typing, and does a relatively quick job of updating it. You can also turn the live updating off completely.

Alright, I fixed this bug. Sorry about that! I've also made it so it remembers where you last tokenized the file to, so it doesn't prompt you each time. You can change the directory in the file menu.
Download in the normal place:
http://merthsoft.com/Tokens.zip

Also, I've been working on list and matrix support. I don't have the editors yet, but here's some pics of my tests:
Lists:

Matrix:


Also, there's a Tokens IRC channel, just for fun. So hop on #TokenIDE on EFNet if you want .

I just like being antagonists in games... a change of heart might be cool, though.

Ok. I'll get all that in tonight.

Ok, so I made an update that greatly increased performance of the live updating. It should now be able to tokenize it and display the tokens without any huge performance hit (if you get a big enough file you'll notice it a little bit, but nothing too big, I think). I've also added a bytes counter, so you know how big your program is:

I've also fiddled with what the tabs display, now they just display the name of the program, no extension, no matter what you open. That's because save will always save a txt, and compile will always save a calc file, no matter the extension of what you opened. I'm not terrible satisfied with any of that, but of well.
Download in the same place:
http://merthsoft.com/Tokens.zip

I haven't updated the xml files at all with this update, I've been busy programming.

I'm still not totally sure what I'll be working on next. I think it'll probably be strings/y-vars, list/matrix, then maybe an "official update" to ticalc, and then work on the text editor.

Alright, I've made some changes. First off, I've removed the "bytes" pane, since I think it's mostly useless now that there's the Tokens pane. I've also added a "live update" switch to the Tokens pane. When this is checked, the Tokens pane will update once you've stopped typing for half a second. If that seems too long or short, let me know. I'll probably make it a setting eventually. I've also added a "line numbers preview" tool (Ctrl+L) until I'm smart enough to get a real text editor in there. Here's a screen shot:

I've been googling around trying to find a good solution, but everything either uses a billion P/Invokes, or GTK, neither of which I really feel like dealing with. I might have to craft my own, which I tried a little bit, but with no real successful attempts. I'll keep working on it as I find motivation. I guess what I want to know from you guys is what should I work on next:
- Line numbers/syntax highlighting
- Matrix/List editors
- String/Y-Vars support

Let me know. I might not take do what you suggest, but it'll be taken into consideration. As always, the download link is:
http://merthsoft.com/Tokens.zip

Sure, I can work on that. Other people have noticed the same thing, too.