Performance is fine. Shortly before the new compact database format was introduced I had issues because of the database file size, but this has been resolved years ago. I think ZFR would have worked with this updated version of lnd.

As far as I know you can't switch implementations while retaining your channels and/or node ID. I'd rather not start from scratch, a lot of how LN works is reputation based.

C_Otto

lightning

c-otto.de routing node history with a bit of data

Thanks for sharing this! I thought of doing something similar for my node, but my numbers are far lower than you.

One question I would have is, did you at some point consider moving to cln for performance reasons? And why did you not?
I think at some point the owner of zerofeerouting sais he had had too, for the size of logs alone (but as far as I know, this has been improved in LND).