Yes there is, the CAT5 cable was replaced in an attempt to solve the problem.

Thinking about it, you would hardly call a computer of any format a device. Printers? Scanners? Other routers? NAS? WAP? Anything else?

The only diagnostic we have is that the it is dropping ping packets. If that is the only visible "issue" then it is not an issue as devices will often drop ping packets if they have better things to do. The OP really needs to tell us what device it is and, other than dropped ping packets, what the "problem" is as at present any suggestions are guesswork based on a lack of facts.

Telling someone to replace a device that could be hundreds of pounds basing that on dropped pings is a potential to have them waste a lot of money for no gain.