Consider more conservative usage of resources

On my Early 2015 12" MacBook that has following specs

```
Hardware Overview:

Model Name: MacBook
Model Identifier: MacBook8,1
Processor Name: Intel Core M
Processor Speed: 1.3 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 8 GB
Boot ROM Version: MB81.0164.B18
SMC Version (system): 2.25f87
Serial Number (system): C02PL0PKGCN2
Hardware UUID: E4CD394E-7E1F-580E-9B79-9D6FB6643498
```

Flow often times tends to take over all of the CPU cycles making OS pretty much unresponsive.

While I like that flow does it's best to type check quickly, I would much rather prefer if it took longer but still made it possible for me to use my computer while waiting it to finish.