[MinaciousGrace]

i assume it doesnt happen on vanilla sm5?

what you are describing happens if the songpacks you play all have ~4mb bg/bn files but it's hard to imagine all of your songs do

check the log file to make sure lua isn't throwing an endless number of errors at you, and make sure you installed etterna as a standalone and didn't just copy and paste everything into another installation of stepmania

it's also possible that you have delayed texture delete off and have a ton of fonts that are getting loaded/unloaded repeatedly, but i'm not too sure

i need to be able to reproduce the issue in order to root it out so give me a link to one of the songpacks you're trying to play and i'll see if i encounter the issue