15GB used up inside RzAppEngine (safe to delete?)

So, lately, my C:\\ drive has been complaining about no space, despite the face that my "Windows" and "Program Files" folders barely take up 100GB out of my 256GB boot SSD. I traced the biggest issue to the AppData folder, which is currently just shy of 40GB. As I was trying to narrow-down the worst-offending folders, I was quite shocked to see that Razer's folder: "AppData/Local/Razer", was using-up a whole 15GB of space, which is crazy for 3 piddly apps: "Synapse, AppEngine and Streamer Companion". The main offender of this space-hog is: "AppData\\Local\\Razer\\RzAppEngine\\User Data\\Default\\IndexedDB\\https_apps.razer.com_0.indexeddb.leveldb" Which is filled to the brim with over 5000 ~2MB LDB files. What are these files? Why are there so darn many of them? Are they safe to just delete? Also, if they are safe to delete, can you please get your app(s) to stop generating them, because 15GB is the size of a game and for it to be used up by something that is solely used to control RGB on a peripheral is stupid.