Tokio can only read 16 KB per file per event loop tick

[DavidDeSimone]

Per tokio-rs/tokio#1976 Tokio can only read 16KB per buffer read of file at a time. This can lead to performance degradations since we are limited by how often we tick the event loop to move promises forward. I will look into a work around.

This may also have performance implications for Deno as well.

[DavidDeSimone]

I have a fix for this, however it involves changing Deno. Since we have already forked Deno, I intend on including it in our fork, however I did submit an issue upstream (denoland/deno#9149), and I will see if they want a PR.

I've also determined that our default tick rate of 0.1s is likely too large - I am getting much better performance from a lower tickrate.

[DavidDeSimone]

Fixed by #106