MuseScore "Not Responding"

I assumed this was the case. However, I haven't added many SoundFonts for awhile now. Usually MuseScore runs okay, sometimes takes a few tries to open the program, and I use the program normally. It eventually goes to "Not Responding" and crashes later, which I've gotten used to since I assume that MuseScore does need its "breaks". As files get larger, the input starts to get slower in response to. For example, if you hold an arrow key to change the pitch of a note, the note would change pitches more slowly if the file is larger, which I also have gotten used to. This issue sort of "popped up in the middle of nowhere". I checked my SoundFonts folder and deleted any unnecessary and duplicates (I now find out that some of the SoundFonts take some SoundFonts from others). I have the "Symphony2" version of the Sonatina Symphonic Orchestra (about 1.2G), a Euphonium (1.1MB which is incredibly small, not sure if that's normal), a Crotales pack (14.3MB, not very large), FluidR3Mono (I have no idea how large it is, I assume its decently large) and a folder with around two dozen SFZ files on percussion. I think that's your idea of a "very large" SoundFont, as that is about all I'd ever use for a long time (unless I find a "classical" saxophone SoundFont!). The percussion is probably a significant cause of the slow down so is there any way I can condense that into an SF2 if that helps? Thanks!