How much sub-standard performance will you tolerate before you make a protest? You will protest only if you have a standard in the first place. Tolerating poor/mediocre performance at work could be a clue that you do the same in other areas of life.
There are many areas in life where we need to set high standards, but we rarely do so.
We allow poor performance to continue till we cannot tolerate it anymore. We allow our house to get messy till we cannot tolerate it anymore. We allow a person to misbehave till we cannot stand it anymore. We allow ourselves to get stuck in a job that no more interests us till we cannot continue anymore.
Very few people think through the standards in different areas of life and set them for themselves. This is dangerous. Without preset standards, you will go through life, accepting trash, as it comes along.
It is time now, to draw the lines and set the standards in different areas of your life.
The quicker you do this, the better it is for you, your family, your co-workers and everyone else you may come across.