I don\'t have much memory on my PC and a pretty weak processor. Although netbeans is by far my favorite IDE it is almost unbearable to use on my present computer because of
I don't know whether you can disable the project scanning or not. Even if you can, I doubt it will ever work properly again. There are a few tips which I have done and it speed up my Netbeans.
Netbeans consumes a lot of memory so adding memory also increases its performance (OS does not need to swap between memory and page file when memory is running low) (but this is probably not an option for you). Also, Netbeans consists of hundreds of files which needs to be loaded at start up so the bottom neck is the speed of your hard disk.