frostwire
P2P programs can download unwanted programs/viruses that clog up your system without your permission that use your bandwidth and perform tasks in the background which all slow down your computer/internet. We here at Blockland Forum suggest you remove frostwire and run a scan of each of the following:
Malwarebytes' Anti Malware
Lavasoft Ad-Aware
Kaspersky Labs Online Scanner
Report back with the results.