Or rephrase the question using correct grammar and spelling because I'm not sure what you're asking.

Or are you saying Idle Master says 'idling complete'.

If so:
Idle master reads your badge page, linked here, it looks for 'card drops remaining'
http://psteamcommunity.yuanyoumao.com/my/badges

Steam gives the cards(not idle master), Steam only gives half a badge set number of cards.
http://psteamcommunity.yuanyoumao.com/tradingcards/faq

You need to buy the rest or trade for them:
http://psteamcommunity.yuanyoumao.com/market/

Free-to-play games do not drop cards unless you spend lots of $€£ on in-game purchases or DLCs

Idle master > Menu > settings
Right there in the middle
Idlling behaviour
... up to 2 hours....
...more than 2 hours...

Conclusions:

Hard to conclude anything other than different games behave differently, installing the game seems to help the 1st card drop faster.

So I did some tests and:

Testing now (using steam-idle.exe), 1 Moment Of Time: Silentville, Release Date: 21 Jul, 2016, just bought it, not installed.
Start 1:54pm
Stop 1:55pm 1st Card didn't drop!

Testing now (using steam-idle.exe), Turret Terminator, just bought it,Release Date: 1 Mar, 2017., not installed.
Start 1:58pm
Stop 2:02pm 1st Card didn't drop!

Testing now (using Steam client), Turret Terminator, installed.
Start 2:28pm
Stop 2:31pm 1st Card dropped :-)

Testing now (using steam-idle.exe), 1 Moment Of Time: Silentville, installed.
Start 2:32pm
Stop 2:34pm 1st Card didn't drop!

Testing now (using Steam client), 1 Moment Of Time: Silentville.
Start 2:37pm
Stop 2:40pm 1st Card dropped :-)

Testing now (using steam-idle.exe, 1 Moment Of Time: Silentville.
Start 3:00pm
Stop 3:04pm 2nd Card did not drop

Testing now (using Steam client), 1 Moment Of Time: Silentville.
Start 3:06pm
Stop 3:07pm 2nd Card dropped :-)

Testing now (using Steam client), Turret Terminator,.
Start 3:14pm
Stop 3:16pm 2nd Card did not drop

Testing now (using Steam client), 1 Moment Of Time: Silentville.
Start 3:18pm
Stop 3:20pm 3rd Card did not drop

Testing now (using Idle Master), Turret Terminator.
Stop 3:28pm 2nd Card did not drop

Testing now (using Idle Master), 1 Moment Of Time: Silentville.
Start 3:42pm
Stop 3:45pm 3rd Card dropped :-)

Testing now (using Idle Master), 1 Moment Of Time: Silentville.
Start 3:50pm
Stop 3:53pm 4th Card dropped :-)

Testing now (using Idle Master), 1 Moment Of Time: Silentville.
Start 3:54pm
Stop 3:5pm 5th Card did not drop

Testing now (using Steam client), 1 Moment Of Time: Silentville.
Start 4:06pm
Stop 4:09pm 5th/Final card dropped :-) Total playing time only 31 minutes according to steam library page.

Testing now (using Steam client), Turret Terminator.
3 minutes, 2nd Card did not drop

Testing now (using Idle Master), Turret Terminator.
3 minutes, 2nd Card did not drop

Testing now (using Idle Master), Turret Terminator.
Played to 41 minutes, 2nd Card dropped

Testing now (using Steam client), Turret Terminator,.
Played to 49 minutes, 3rd Card did not drop

Testing now (using Idle Master), Turret Terminator.
Played to 60 minutes, 3rd/Final card dropped :-) Total playing time only 60 minutes according to steam library page.

Finish time 5:22pm Total cards = 8, total time = 3½ Hours, in game time 1½hours, saving ½hour.

Noteworthy: Both these games have steam cloud and achievements.

A test needs to be done to determine:
If you start a game that still has all card drops, and then stop it quickly to get the 1st card to drop, does the last drop happen sooner or does it still happen after 30min per card total.

So is it:
card1 at 1min card2 at 31min card 3 at 61min or

card1 at 1min card2 at 60min card3 at 90min or

card1 at 1min, card2 at 31min, card3 at 90min.

I think different games behave don't all drop the same, I don't know the determining factor.

Most games drop a card every 30 minutes, some games drop a card every hour.

If you idle games for 2 hours then you also risk getting less than 4 drops after the 2 hours (1 for each 30min).

Idling together brings no benefit, it's just there for people who have 2hour drop restriction because they got a steam store refund at some point.

Idling 5 games together simply takes 5 times as long for card to drop as when you idle 1 game.

The stop to drop method mostly only works on the 1st card of the set, if the game has been in the library for a long time then you might get lucky and get more quick drops.

Idle master is no longer under development.
Better place for discussion would be on ASF forum because that's still under development.

It's working.

Idle master reads your badge page, linked here, it looks for 'card drops remaining'
http://psteamcommunity.yuanyoumao.com/my/badges

Steam gives the cards(not idle master), Steam only gives half a badge set number of cards.
http://psteamcommunity.yuanyoumao.com/tradingcards/faq

You need to buy the rest or trade for them:
http://psteamcommunity.yuanyoumao.com/market/

Free-to-play games do not drop cards unless you spend lots of $€£ on in-game purchases or DLCs