Netdrive 3 Cache limit being ignored

HI There,
Just installed Netdrive 3, connected to Google Cloud Storage.
Started running a backup job, from Veeam Backup and Replication.
Job started running fine.
But… then my disk ran out of space…
I looked at the netdrive 3 settings, and its set to use up to 10GB of disk space for cache.
Checked the Cache path and there is a 90Gb file sitting there.
So basically the cache setting has been ignored, or am I missing something.
My backup jobs are quite large, VM backups of servers ranging from 100Gb to 10Tb.
So any large caching is impossible.
Any advice?

Thanks,
-Tim

Please refer this article to understand how cache works on NetDrive3.

Thanks!

Ah ok, so basically this is useless for VM backups.
Thanks,
-Tim