Do I need defraggler & ccleaner installed or does AVG cover all this

Since installing AVG paid version my Win7 pc has slowed right down, so do I need all these other products as well, also can I restore Avg to all the default modes?

Hi Gerald,
This is covered by AVG PC TuneUp, but it should cause PC slowdown.
Thanks

Hi Gerald,
This is covered by AVG PC TuneUp, but it should cause PC slowdown.
Thanks