I was running low on ssd space, so I opened up WinDirStat and noticed that there was a folder in Brave’s AppData that was taking up 4Gb of space. The exact path to this folder is C:\Users\username\AppData\Roaming\brave\File System\001\p\00. This is a screenshot of the contents of the folder. I thought that it could be an unfinished download, but I am unable to open it using 7-zip. There is no file extension as well.
I am on Windows 10, with Brave and Brave Dev installed.