Use GZIP compression
Your website visitors will see the difference using GZIP. Another tool we recommend is W3 Total Cache.
The most popular hosting that most people use is shared hosting. It is the cheapest and as the name says, you share CPU, disk space, and RAM with other sites that also use the server. This is the main reason why shared hosting is not as fast as VPS or a dedicated server.
Although it represents an option for a larger budget, using a dedicated server that can be your own physical server guarantees you better optimization.