Same as @Dzique

Name of Internet Service Provider (ISP)
Vectra
Country of residence
Poland
When does the problem occur (e.g. only during specific times such as in the evenings?)
Everytime
Frequency of problem (e.g. every 2 minutes)
Anytime, can't play game.
Game content in which the issues occur (e.g. dungeons, trials, certain areas)
Everywhere
Moogle.
Problems started occuring after installing FINAL FANTASY XIV HotFixes (Jul. 21, 2017)