I would just add another comma, in bold.
The system will calculate things like the time of the match, so the match may start off slow and then get faster toward the middle, have a break after some awesome move combinations, and then pick back up to finish the match.
Why did you use inverted commas, is it just because you're quoting someone else, or is it because it's direct speech?
If it is direct speech then don't waste your time stressing over it being grammatically correct because very little spoken English is.
Something can be grammatically correct yet still sound weird and jarring to a native speaker. If you're studying English as a foreign language you should spend as much time thinking about what sounds natural as you do on correct grammar.
Lots of colloquial, natural sounding English, is extremely ungrammatical.