Suggestions & Solution
Synconics technologies are really good in what they do and they always suggest their clients with honest, transparent, opinions favorable to clients' commercials and business approaches. On analyzing the system, Synconics observed the issues were due to over customization, so instead of optimizing the system, they suggested migrating the system to Odoo v14 enterprise. As if v12 code was to be optimized, it would have taken a long time to analyze, check, rectify and test, with similar time the modules could be migrated to v14. With the migration, Synconics suggested modules optimization and resolving the traceback errors and the bugs observed by the client during system operations in v12.