"My Internet response time is gradually getting slower."
If you experience slow internet response speeds over time then your computer may be overloaded with spyware. Over time spyware can build up on your computer and gradually slow your internet speed down. Also spyware can open up vulnerabilities in your system to allow more harmful things in, such as viruses. I would recommend that you download Malwarebytes and Spybot Search and Destroy and run them on a regular basis to cure or prevent internet slow down. Follow the steps below to download and run Malwarebytes and Spybot.
1. Go to http://www.malwarebytes.org/ and download the free version of malwarebytes
2. Install MalwareBytes
3. Run a Full System Scan
4. Click View Results
5. Fix Issues
6. After Running Malwarebytes
7. Go to http://www.malwarebytes.org/ and download the free version of malwarebytes
8. Install MalwareBytes
9. Run a Full System Scan
10. Click View Results
11. Fix Issues
12. Go to http://www.safer-networking.org/en/mirrors/index.html
13. Click any of the download here buttons
14. Install spybot
15. Run a full system scan
16. Select fix problems
17. Run both scans on a regular basis
Following these steps should improve and maintain your internet speed.