Hi–
When I select a word or words and try to replace the selection by typing something, the first letter doesn’t show up. That is, if I type one letter, nothing happens. I’ve waited several seconds, to make sure it’s not just lag. Then when I type another letter, both letters show up at once. This doesn’t always happen. I’m working in composition mode, with a single short chapter. I’ve had some lag issues, so I have my autosave set for 10 seconds, no other applications are running, and wi-fi is off. This seems to be weirder than lag, though. Any ideas? Oh, and I’m using Yosemite, but this was happening with Mavericks too.
I’ve recently run into a bit of a conflict between the setting to always show scrollbars at the Mac level, and believe it or not, whether or not the font preview pane is visible in the system font palette. The latter is the easiest thing to fix it with, just hit Cmd-T to bring that up and then use the gear menu (on 10.10) to hide preview. For me that was causing lag whenever I did certain things, such as right-clicking, which would persist until I restarted Scrivener.
That doesn’t quite sound like what you’re experiencing, for me it was just persistent typing lag that made things feel slow, and when typing quickly, it would take a while for the keystrokes to catch up. But it’s worth checking. Auto-save rarely causes lag unless you just so happen to start typing when it starts saving, and even then it requires a slow or overburdened disk to really be a nuisance. There is also lag when you first start writing in Scrivener that much more closely matches what you describe. That is just normal, the I suspect it is just the full text editor framework loading. With that nothing will appear for a few seconds and then all typing will come in at once. Lastly there are images, the bigger there are and the more you have, the slower things can get. Using linked images or image placeholders can mitigate this entirely.
In your case, selection seems to be the sole trigger? That is a new to me. Whenever I come across anything peculiar like that, I run a safe boot (hold Shift after the startup chime and let go when you see the Apple logo & progress bar) and try with nothing running but Scrivener and Finder. If the problem persists, I know it likely isn’t a conflict with any other software that may be running normally.
Cmd-T doesn’t do anything on my computer. I’m not sure what I’m looking for–can you give me a little more detail? Thanks.
This actually isn’t the only lag I’m having, just a weird example of it. I am also experiencing lag whenever I use the trackpad to move the insertion point–if I, say, move the insertion point from the beginning to the end of the word “mind” and then type “less” (to get "mindless), I end up with “lemindss”. And selecting, then dragging text sometimes won’t work at all–as if the text isn’t really selected yet, so my next tap just deselects it.
I don’t have any images I’m working with. I do get lag on startup, but I can be patient about that. 
I’ve tried safe mode; I’ll try it again tomorrow.
That’s strange, it might be you’ve got some utility that has taken over Cmd-T, or maybe assigned it to something else yourself. It’s strange because that is a standard shortcut across the entire Mac for bringing up the font selection floating palette, and has been since OS X 1.0 if I recall correctly. Well, you can also get to it in the menus, use Format/Font/Show Fonts….
OK. Turns out that font preview was already hidden, though. Thanks.
I tried logging in in safe mode, and got no improvement. Anybody have any ideas?
I’d try uninstalling Scrivener, turning off the Mac, cold booting it, then downloading and installing the latest build of the software:
literatureandlatte.com/download_mac.php
If that didn’t work, I’d also:
- reset PRAM (support.apple.com/kb/PH14222?lo … cale=en_US)
- reset SMC (support.apple.com/en-gb/HT201295)
- and use Onyx (titanium.free.fr/onyx.html) to clear out caches, etc.