Max points

I know to get maximum points we :
1) Equip Miku.H ava, which gives 15% more points.
2) Using the point booster, we get additonal points aswell (any idea how much?)

What l want to inquire is :
1) Does time matter?
Many vids say going till last 10 seconds increases points. Confirmation would be appreciated.
2) How much maximum points can we get per run?
3) ...how to get those max points..?

 

Without boosters 1k points at diff 220

 

it really did increase the points if you finished it on 15 second before timeout. the highest I get so far was 40k.

 

I think is not about the time, is the total kill count. If you can hold until the last 10-15 second, you kill count will go higher and this make you reward increase. This can be known when the boss appear but the minion still none stop coming.

 

I see, thank you all for answering ^^)!