If you're talking multiple full-length episodes, there's no way for that not to take a long time. Just try to keep the project as simple as you can (if you don't care about anything else, just make it one giant clip, no breaks, transitions or effects), click save before you go to bed, and check it in the morning. Lower resolutions will save faster but, well, they're lower resolution. =/
"As Gregor Samsa awoke one morning, he found himself transformed into a giant pigeon!"