Is This Sentence Grammatically Correct?

I suggest "...time of the match, so 'it' may start off slow, then get faster..."
(comma after first "match", changed second "match" to "it", comma after "slow", omitted "and" before "then get faster")

I would just add another comma, in bold.



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.

it's way too wordy.
I'd split it into several sentences.
Some parts also are confusing.

"The system will calculate things like the match's timing. This includes starting so game off slow, getting faster in the middle, and having a break for some awesome combinations. It will then conclude to pick up the match at a faster speed."