Hello Binu et al.
There's at least one thing that you can do to improve performance
of Log4OMv2 - change database from SQlite to MySQL.
Few years back I wrote relevant routine which now
is included in Log4OMv2 User Guide, page 259.
Another thing is to move Log4OMv2 database from your PC
to external small machine, for instance RaspberryPi,
with Linux system installed and running MySQL server.
This is what I successfully use for few years now.
Should you need some guidance do not hesitate to drop me a line.