I can work productively and for very long hours with a lot of stuff which many dev considers productivity hurdles:

- single small monitor? No problem (in fact in one occasion in which my roommate accidentally broke my laptop charghing port and I couldn't get a spare I worked on an iPad connected trough SSH to a Linux machine completing one of the hardest tasks I ever did without significant loss of productivity)
- old machine? That's ok as long as I can run a minimal Linux and not struggle with Windows
- noise and chatter around me? A 10€ pair of earbuds are enough for me, no noise cancelling needed
- "legacy" stack/programming language? I'd rather spend my days coding in Swift or Rust but in the end I believe which is the dev and its skill which gets the job done not fancy language features so Java 8 will be fine
- no JetBrains or other fancy IDE? Altough some refactoring and code generation stuff is amazing Neovim or VS Code, maybe with the help of some UNIX CLI tools here and there are more than enough

despite this I found out there is a single thing which is like kryptonite for my productivity bringing it from above average* to dangerously low and it's the lack of a quick feedback loop.
For programming tasks that's not a problem because it doesn't matter the language there's always a compiler/interpreter I can use to quickly check what I did and this helps to get quickly in a good work flow but since I went to work with a customer which wants everything deployed on a lazily put together "private cloud" which needs configurations in non-standard and badly documented file formats, has a lot of stuff which instead of being automated gets done trough slowly processed tickets, sometimes things breaks and may take MONTHS to see them fixed... my productivity took a big hit since while I'm still quick at the dev stuff (if I'm able to put together a decent local environment and I don't depend on the cloud of nightmares, something which isn't always warranted) my productivity plummets when I have to integrate what I did or what someone else did in this "cloud" since lacking decent documentation everything has do be done trough a lot of manual tasks and most importantly slow iterations of trial and error. When I have to do that kind stuff (sadly quite often) my brain feels like stuck on "1st gear": I get slow, quickly tired and often I procrastinate a lot even if I force myself out of non work related internet stuff.

*I don't want this to sound braggy but being a passionate developer which breathes computers since childhood and dedicating part of my freetime on continuously improving my skill I have an edge over who do this without much passion or even reluctantly and I say this without wanting to be an èlitist gatekeeper, everyone has to work and tot everybody as the privilege of being passionate in a skill which nowadays has so much market