WPA3 support is probably a no go due to the mwlwifi firmware being closed source and not being updated for sometime. In addition, there has been specific issues with the WRT3200ACM on 21.02 related to the wireless radios
There was a recent commit that fixed what looked to be a regression between 19.07 and 21.02, but it's currently only present in snapshot builds, the 21.02.2 release will have the fix.
Not something you want to hear but you are likely to have many issues with WPA3 on WRT3200ACM you are best to avoid it.