I need some help!

XDH is an ok dad, theres alot worse out there. He cares for our 3 kids, meets their basic needs, and loves them. However, i have a huge issue with the amount of physical time he spends with them.

We have 50/50 shared care, week on/week off. Kids aged 7, 6 and 4.5

On my week:
I drop off/pick up the older 2 from school @315pm
DH drops off and picks up the youngest from daycare @5pm
530pm bath, 6pm dinner, 630pm teeth/toilet and quiet time, 7pm bed
Saturdays we usually do things around the home (games, dvd, cooking, ball fun etc)
Sunday is family day and we will go out and do fun things (park, drives, swimming etc)
We try to go camping every now and then

His week:
He drops all 3 off to school/daycare
He picks them up at 530/6pm
6pm dinner, 630 bath, 7pm bed
Saturdays his DF goes out, he turns tv on or send them out side while he sits in front of the pc
Sunday they do something that involves very little interaction (movies, play centre, other peoples homes with kids)

I spend A LOT of physical time with the kids, i wouldnt change that for the world, but i hate how he never spends time with them. All it seems to me is, he feeds, baths, bed or drops off to care/school...

He tells me they are well behaved....thats cos they are never home to muck up, theres no time!

Am i over reacting or should i just shut up and deal with it? Ive told him that he needs to spend more time with them, but he never does. His work is sooooo flexible, its not a structured 9-5 job, he works for mates.

He rarely goes any of the school functions that the kids went me/him/us to attend, every thing is an effort.

My eldest has asked many times why doesnt daddy take them out or do fun things like we do.

Do i just focus on MY time with the kids and provide them with the best i can...what he does/doesnt do, leave it be, thats his problem/business?

As a side note...he was like this when were together, so nothing has changed.