flaky

adjective3

1. •
   Consisting of flakes or of small, loose masses; lying, or cleaving off, in flakes or layers; flakelike.
2. •
   (informal) Unreliable; likely to make plans with others but then abandon those plans.
3. •
   (informal) Unreliable; working only on an intermittent basis; likely due to malfunction.

   • I cannot enjoy the online game because of my flaky Internet connection.