Drupal core 8.3.6, Admin, Extend, +Install New Module

I noticed that sometimes when installing a new module that the installation, when underway, stalls and does not install but if I repeat the process several times, then the installation succeeds. I do not know if this due to module packaging, internet provider, computer or website host, etc. I just thought I would mention it in case others experience this also.

Drupal version: 

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