ISTPs, also known as the Virtuoso personality type, have certain preferences and tendencies that can make them prone to being annoyed by certain things. Here are some common factors that may annoy an ISTP:

1. Micromanagement: ISTPs value their independence and autonomy. They prefer to have the freedom to make their own decisions and work at their own pace. Being micromanaged or having someone constantly checking on their progress can be highly irritating for them.

2. Inefficiency: ISTPs are practical and efficient individuals. They appreciate when things are done in a logical and streamlined manner. Inefficiency, whether it's in processes, systems, or people, can frustrate them. They prefer to find the most effective and direct way to accomplish tasks.

3. Overly emotional or dramatic behavior: ISTPs tend to be logical and level-headed individuals. They may find it annoying when others display excessive emotional reactions or engage in unnecessary drama. They prefer to approach situations with a calm and rational mindset.

4. Lack of personal space: ISTPs value their personal space and independence. They may become annoyed if someone invades their personal boundaries or constantly interrupts their alone time. They need time alone to recharge and process their thoughts.

5. Repetitive or mundane tasks: ISTPs thrive on variety and challenges. They may become annoyed if they are stuck in a monotonous routine or have to perform repetitive tasks without any room for creativity or problem-solving. They prefer tasks that allow them to use their practical skills and explore new possibilities.

6. Unreliable or dishonest behavior: ISTPs value honesty and integrity. They may become annoyed if someone consistently breaks their promises, lies, or engages in manipulative behavior. They appreciate straightforwardness and expect others to be reliable and trustworthy.

7. Overly structured or rigid environments: ISTPs enjoy flexibility and adaptability. They may find it annoying if they are forced to conform to strict rules or work in an environment that lacks freedom and creativity. They prefer environments that allow them to think outside the box and explore different approaches.

8. Excessive small talk: ISTPs are typically not fond of small talk or superficial conversations. They may become annoyed if they are constantly engaged in meaningless chit-chat or forced to participate in social interactions that lack depth or substance. They prefer conversations that are meaningful and intellectually stimulating.

It's important to note that while these factors may generally annoy an ISTP, individual preferences and experiences can vary. Each person is unique, and what annoys one ISTP may not bother another.