Yes, DVR in neutron has bugs that have not been fixed relating to ARP and protocols such as VRRP (which Octavia Amphora use).
Moving to OVN is a good solution to get rid of the DVR issues.
Also note, Octavia Amphora based load balancers can still be used with the OVN ML2 in neutron. You do not need to use the neutron OVN provider driver in Octavia.
Thanks Michael! Much appreciated for the feedback. I did see that there is a "type" parameter when creating load balancers, and the default appears to be amphora, even if OVN is used. Using amphorae is actually a bit more desired, even for more basic Layer 4 balancing, since the hashes available are more flexible than what OVN provides. So good to know what we can basically disable the use of OVN with Octavia. Thanks again! Eric