Connection Problems (comcast download speed 100 mb+)

My brothers and I usually get around 16 ping. However, recently it goes up to 20-40 which obviously doesn't sound bad but it feels so much worse than it actually is. I would right click and it would take 1-2 seconds to register which might mean packet loss? This also has been occurring every day throughout the day for a week now. We called Comcast and they're bringing in a technician tomorrow. I was wondering if there is anything I should ask the technician? Like, if I tell him that I play professionally or something and that I NEED a stable connection. It doesn't have to be fast just fast enough where I can play the game and perfectly stable (Cannot be perfect I know, but it could definitely be better).
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