Reduce the number of downloads for each measurement
```
# Number of downloads with acceptable times we must have for a relay before
# moving on
num_downloads = 5
```
5 seems very high. Do we really need 5 * 2 = 10 measurements for each relay?
Let's try:
```
num_downloads = 3
```
Because 3*2 = 6, which is close to the 5 measurements we originally wanted.
issue