Illustrator crashes when scaling something proportionally

For whatever reason, Illustrator CC still keeps on crashing on me whenever I try to proportionally scale up grouped vector dandelion flowers I made. It doesn't crash often when I individually scale up a flower one by one, but the moment I group them to easily scale up them up proportionally, Illustrator will go down without fail. 

This is the only file that will crash Illustrator. It is also the only file where I more extensively make use of Stroke's "Dashed Line" affect and the "Charcoal Feather" texture than usual in my vector work. I'm pretty sure these effects are what's causing the crash, but I'm not sure why. I can sometimes scale the individual flowers that have these effects on without Illustrator crashing, but other times Illustrator does go down. 

I have updated Illustrator to the latest version, deleted and reformatted preferences dozens of times, and have restarted my computer multiple times. I cut and pasted the assets onto a new file with sized down artboards, thinking it might be a corrupted file problem, but it didn't work. I'm honestly at my wit's end trying to figure out what's going on.