Slow Software
I work at a large company that is not one of the famous silicon valley tech companies.  One of the worst parts of working there is the heap of various enterprise anti-virus software they install on our computers.  It brings huge typing and disk access latencies.  Even opening files in vim with FZF is slow.  I can't explain why but this makes programming so much less pleasant.  I really just want to work somewhere without anti-virus.