I do. The problem comes mostly from my other character. To be fair, most of my party will take 1-3 minutes, so I'm not stretching it too much, especially since I play twice as many characters. The problem comes when I plan to cast a spell, but then my party members either kill something or step into the radius of the spell and I have to change my plan or possibly kill them. it gets... annoying.
Trust me, I've made a ton of intentional mistakes, from accidentally shooting a werewolf with barbed, iron arrows instead of my silver ones, to burning both my character's tents with a pillar of fire. it ended up setting most of the other tents on fire too, or blowing them away from the blast of hot air.
I'm still working on all the stuff though. It's a constant struggle to cut down on time, especially when the fights continually get harder and I get more diversity. The other thing that takes up time is making sure that I am within range to cast certain spells, or that I can touch the a lot of people with my buff-on-contact spells.