The problem:

All those leters are eash sprites, while others have costumes in one sprites

The suggestion is to make letters (with thier effects) into one sprite:

Wait I remember seeing this before, is this a dupe?
Found it: https://scratch.mit.edu/discuss/post/1726222/

Eason_9 wrote:

Wait I remember seeing this before, is this a dupe?
Found it: https://scratch.mit.edu/discuss/post/1726222/

Thanks for the link! It does look like this is a duplicate topic so I'll close it to keep the conversation all in one place.

Please use the existing topic in the link above.