Did you change dbcache, you can change the value to a higher value (node never flushes the UTXO,) change the value to a value less than 4000, which is the size of your RAM,  will help to increase sync speed, but do not increase the number to a large number or close to 4000 to avoid crash problems.
You'll find more information here and the table below shows how much the sync speed will increase.



https://blog.lopp.net/effects-dbcache-size-bitcoin-node-sync-speed/

Connecting to Tor may increase speed if your ISP has restrictions on downloading Bitcoin.