hello there i have serious issue with my internet...speed of internet gets slow when i open another website in another tab. when i do check in ping -t 4.2.2.2 the time gets larger and finally  i start to get request time out .speed was OK 5-6 days before but now im facing this issue ...pls help
Call your ISP.Patio is right.
Yes, you need to contact your ISP company.
This topic is quite common on this forum. In most cases the only SOLUTION is to contact the ISP. They are best able to supply you with diagnostic tools specific to the modem and router that you're using. Of course, you can always use one of the speed test programs that are AVAILABLE on the Internet. But these programs do not tell you why your experience varies from day to day or even from 1 min. to the next.

To put it quite bluntly, many service providers are not telling the truth about their performance. The truth is, the performance is quite a bit below what they advertise. One would expect that the service should be providing good, reliable communication. 99% of the time. That is what we expect of our home appliances, our automobiles, our electric service, and even the garbage pickup.

Some  Internet service providers are consistently below a reasonable standard of quality and integrity. And no, I am not making this up. And it's not because I'm irritated. But I am irritated. I went through this with my ISP told I think they started to get tired of me, and finally they put a real-time monitor on my service selected find out what was going wrong. That seemed to help a little bit.

But my personal experience is not what matters. Both on this forum and other places, PEOPLE are reporting the quality of service of Internet providers is very below reasonable expectations. Here is a link to a provocative article that explains why many ISP companies are less than TRUTHFUL about their performance.

Is Your ISP Lying About Your Internet Speed?