Back-Up Macro: performance

Hello everyone! I am working on a workbook that contains multiple sheets. I use a macro to back up my sheets everytime I save them (with a special command). Additionally, I create .txt files each time for the game I'm developing. However this macro doesn't seem to perform too well (time-wise), I feel it can be improved, but I'm not sure how. Here is the code:

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That's it. Any advice on how to reformulate and/or improve the code to speed up performance would be greatly appreciated. Thanks in advance!

Thanks for your reply

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What does this one do?