A lot of the critical math before the actual winding begins occurs in the s2_aCon() function, and that seems to be where a lot of the variables are failing - I just don't know what the conflict is because it works fine without all the nextion stuff
e: I've been trying to figure out the issue, and now I'm just focusing on these variables failing to calculate. It appears all of the ones that are failing involve some floating math:
MaxSpeed1
MaxSpeed2
Move2_A
Move2_B
They're all being divided or multiplied by fractions. The frustrating thing is that the math works absolutely fine when I define the main arrays (blockWinds, blockStrafe, blockArea) in the setup - but when I'm using the nextion screen code that takes the data from the screen or saved files and puts them into the arrays, suddenly that those functions don't work (it's something that works separately and populates the arrays just fine - and still does, as far as I can see..).
I'm way out of my element now though so I'm hoping anyone with a keen eye for stupid math conflicts can see it.