I was able to create a remote cache dir
I deleted my cache dir.
Created D:\cache2 folder
Open command line (admin mode)
mklink /D "C:\Users\mp3ge\AppData\Local\BraveSoftware\Brave-Browser-Beta\User Data\Default\Cache" "D:\cache2"
When I opened Brave, and browsed a few sites. D:\cache2 was populated with cache files