Do 4 of each node as quickly as possible after the event opens, including the special character nodes. Then complete the final last 2 battles of each node as close to the finish of the event as possible.
Here is how I do it when I'm seeking placement. I have no idea if this is perfectly ideal but it's usually good for top 10 in the post-tapping era.First clears should start the minute the event/sub starts:Gateway Loaner Node (1x)1st Easy Node (1x)4-star Essential Node (4x)3-star Essential Node (4x)2-star Essential Node (4x)2nd Easy Node (1x)3rd Easy Node (1x)1st Hard Node (1x)2nd Hard Node (1x)3rd Hard Node (4x)2nd Hard Node (3x)1st Hard Node (3x)5-star Essential Node (4x - this is only SCL 7 or higher)3rd Easy Node (3x)2nd Easy Node (3x)1st Easy Node (3x)The last clears should be as close to the end of the sub as possible:Do 2 clears of each node, from the 1st Easy Node to the 4-star Essential Node, starting with the 1st easy node and working your way up.Clear the Gateway Loaner node as many times as it takes to put it at zero points.Clear the 5-star Essential Node 3 times.Do 1 clear of each other node, starting with the 1st easy node and working your way up.This will give you 7 clears of each node and get you close to maximizing the point value regeneration in-between clears. This is about as min-maxy as you can get, but for competitive placement the difference between point totals in the top 10 are pretty narrow.
Also worth noting, if you don't have a lot of boosted characters or pve busting teams (5* teams, Grocket, gamora, Medusa, strange, etc), you'll place lower since speed rules in pve.
Slightly off topic but if you don’t have the required 5 star is it still possible to get max progression in skill level 9? If not, which level is best for all rewards (without worrying about placement)?
I've been able to place a lot higher after the advice here. But now how about subs that span over a day? Some are 2 days long does the same strategy apply?