From core dev:

More improvements made to source code for 5.4 release
- AbstractMem library v 1.1 -> Improvement up to 4x faster than previous version
- Some JSON-RPC changes -> Documented on CHANGELOG.md , pending to add to Wiki and other sites

5.4 release working with AbstractMem will work PERFECT on a simple 1Gb RAM machine. Run a full node for less than 5.00 USD$/month

State-of-the-art core for current v5 will give us a perfect ready-to-go for next v6

https://github.com/PascalCoin/PascalCoin/pull/31