Short-lived but irritating glitch

[smbmaster99]

Hey, I'm using Smash Stack on my Wii U to use texture/stage/etc hacks and it works fine, but occasionally during the middle of a match, the screen will glitch slightly, like a purple or dark green, translucent bar and a few smaller squares of the same color and transparency will appear on the left or right side of the screen and the game will lose a lot of its frame-rate. Not only this, but all visual effects (like fire) and character projectiles and other misc. weapons (like Link's bow and arrows, boomerang, and bombs), and even items become invisible.

This glitch may occur at any time as far as I can tell, and it lasts for varying lengths of time (the longest its ever lasted was around 30 seconds I think). After it stops, the game returns almost completely to normal, except the frame-rate is now double its normal rate. This usually lasts for however long the slowness lasted.

I have been unable to identify the source of the problem. Has anyone else had this issue, and if so, have you been able to get around it or know of a possible solution? It's not the end of the world, this glitch, but as the title says, it's irritating when it DOES happen XP

[ABloodyCanadian]

Sometimes happens when certain parts of a model are removed incorrectly... That's the only thing I came up with...

Does this happen with certain characters or stages?

[smbmaster99]

Thanks for the tip, I didn't think of that. I'll check next time I play and I'll post again.