Card drops take too long

the first card won't drop for at least 2 hours. Thereafter, it varies, but 1 per hour sounds like a decent average.
There's no way to speed it up.

The cards are (supposed to be) a reward for playing, not some automatic entitlement.

well, with idlemaster i dont need to idle 2 hours to start getting drops
i idle games individually and i get 1 drop every 30 minutes
so it usually takes 1,5 hours to idle a game with 3 drops
although sometimes my idlemaster glitches and after first 30 minutes, i start getting a drop only every 1 hour
and i doubt you can somehow speed it up
in old times it used to be every few mins, it took 30 minutes to idle 3 drops

I don't know about the time for card drops, but sometimes it is really way to slow. I think it is quite sad to complete the game but not have all cards of it. Might be, that the game is to short or to easy, but maaaaybe the time for carddrop is to long :D

the devs set up the drop speed of their game

Also the card drop rate was changed for some games after the new refund policy steam brought in. As in. You can refund a game if you have less then 2 hours of game-play on it. Hence the 2 hour wait you will get sometimes with the card drops.

First, I used Idle Master to get 2h of playtime for each game (30 at the same time!)
Then switched to Archi's Steam Farm which is phenomenal. I run it at computer startup and keep it on all the time.
I even installed it on my computer at work :-)

The drop card rate depends on the game, Faeverse Alchemy took about 7 hours to drop all cards, while other games take around 1:30~2:30.

Don't you like actually playing the game(s)?

After 2 hours, the cards start getting dropped, but still, the card drop frequency depends on the game. Other games drop all the cards very fast, while others require many hours of playtime till they give you all their cards. :P

Yupp, just got my last card drop on Galak-Z ... after 11.2 hours, that might be a new record.

I've been using Idle master for a while now and its great. However, when playing with VAC-enabled games, such as DOTA 2, CS:GO, etc, you should log out from Idle master or take the risk to be VAC banned. For me, I'm using Idle master while watching videos or just plain surfing.

The only way I noticed to speed it up is with Idle Master (sometimes). I noticed if I have it idle all of my games with less than 2 hours at the same time ... sometimes it'll drop cards before the 2 hr mark, and when it does it always drops a card for every single game currently running.