Bor mainnet synchronisation is slow

[Avionic23]

System information

Bor client version: v1.5.2

Heimdall client version: v1.0.10

OS & Version: Ubuntu 20.04.6

Environment: Polygon Mainnet

Type of node: Sentry

Overview of the problem

After changing db.engine from 'leveldb' to 'pebble', state.scheme from 'hash' to 'path' and downloading new compatible snapshot there have been problems with bor synchronisation. At first, it was okay until approx. 16m block and then the speed dropped gradually, so only ~100k blocks have been added in one week. Btw, the snapshot is almost full, more than 60m blocks have been downloaded ~3.5 T

Logs / Traces / Output / Error Messages

Additional Information

[cffls]

Could you try the latest version v1.5.4-beta? It has a few bug fixes in chain execution.