No, Avast is not slowing down your computer as it is an effective antivirus software which removes virus, Trojans, and threats. Not only this but, it also boosts the performance of the system. If your computer performs sluggishly then it might be possible that you have two antivirus software programs on the same device. In that case, remove the other antivirus software and then reinstall the Avast UK Contact Number.
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