Prod 18c on ACFS

In our 12.1c RAC clusters we define 3 Diskgroups (data/fra/redo) on ASM that have up to 100 DB on them (noncdb). This been working fine for us, but with 18c we thought about using ACFS in order to be able to use snapshots, etc. If we keep the same DG structure we will end with 3 mountpoints for each DB, meaning we will have over 300 mountpoints on the nodes. Not a good call on my experience as cluster takes ages to stop/start that many acfs. We can use 1 for data for each DB and a global one for fra/redo, but not sure if acfs will be happy with 100 dB writing to only one volume. Of course there is also the I/O impact on going to ACFS, meaning we will lose around 3% based in our tests. Is anyway running a similar environment using ACFS? Even if not, but you have some insight will be appreciated.