As far as I can tell, its random. Sometimes the picture will show up after I edit it the first time, other times it just doesn't. I have a feeling it has to do with the lag, but without being able to remove entries in LaunchBox with missing files, I wont be able to get that number down anytime soon because it will be a lot of manual deletion... which also is slower cause of lag.
Actually, I may just re-import everything. That would honestly be faster. I'll have to use the filter option when importing files though, because that was part of the problem. Do I import and set one filter, then import again with a different filter, because I tried using multiple filters; i.e. *.iso, *.bin, *.img but that didn't work.
Edit: Also just to document everything more, the lag is still very present when sorting and filtering the library.
Edit 2: Hm... that's strange... I just edited a game entry's name and the picture it already had disappeared. Just the cover picture was removed, fan art and the background was still there, and in fact it didn't delete the image it only "hid" it. Editing the entry still shows the cover image. That is the case with every cover art issue I've had. Simply editing again but doing nothing in the way of editing info, just saving it makes the picture reappear. Still think its the size of my library.
I also have a question about the program and this is coming from someone who doesn't write code or programs, but I am still extremely techy and tech savy. That said, I assume the program is 32bit, have you thought about creating an alternative 64bit package? I know some emulators are going in the way of 64bit only as it means the system has a certain minimum requirement. Obviously only going 64bit is a choice they make for performance and wouldn't be a good idea here. That said, a 64bit option would (I think) allow for the program to take ahold of more resources. I did apply a 4GB patch to the program, but that did nothing at all. I assume because the program its self has a lower internal regulator? So even if you apply a 4GB patch, it still knows how much ram it could use at max? Again, speculation on my part as to why a 4GB patch didn't work. I apply that patch to games all the time and it makes them run so much more smoothly. 64bit offerings could be made for people with way too big of a library like myself or power users. Hell, just roms alone without one system and without DOS I reached almost 8k items. With steam, DOS and the other system I omitted I would be close to 10k items.
Sorry for the long post. I really like this program a lot and I want to help in any way I can, even if that is just talking.