Fancade has a hard script limit. After a certain number of scripts in the editor, adding anything else will cause a "Too many scripts" error, and the game will refuse to run, as long as the extra scripts are not removed. Games that do not optimise scripts, that affect multiple objects, into loops are most likely to run into this issue.

Every script block counts as 1 script towards the total limit. It does not matter which script block it is, as long as it is an inbuilt script block, it adds 1 to the counter. The attached image has 4 script blocks, thus the script consumption is 4/4096 or 0.1%.

But wire splits are defined as "n to 1" and "1 to n". This basically means, no matter how large the split is, it will add only 1 to the counter. The script in image B adds 10 scripts (9 script blocks + 1 wire split) to the counter.

The same applies in case of joining. The script in image C counts as 4, whereas the script in image D counts as 10.

When a pointer is dereferenced, i.e. converted to value, it counts as one script. In image E, the Get Variable block outputs a pointer, which is then derefernced to a value for the Negate block. Thus the script adds 3 (2 script blocks + 1 pointer dereferencing) to the counter.

This behaviour, when combined with wire splitting, results in a peculiar quirk where adding another script block can actually consume less script limit than without that block. In the following picture, case 1 adds 8 (4 script blocks + 1 wire splitting + 3 pointer dereferencing) scripts to the counter. Almost half of them are just from dereferencing. To avoid that, in case 2 another script block is added to dereference the pointer before the split. Thus case 2 only adds 7 (5 script blocks + 1 wire split + 1 pointer dereference) scripts to the counter.