The shorter episode counts certainly don't help. As many issues as I have with Chris Chibnall, I do think that the Flux season was at least decently paced. And that was six episodes. RTD is working with eight a year.
Season 1 felt like he had planned a tradtional 13-ish ep season, and then after everything was planned and written; learned he wasn't getting that many. So had to throw away half and then try to make the rest work. Season 2, at least feels like he had planned and wrote for the 8 episodes... he just still wasnt good at it yet. And yeah, Flux is a pretty good story, despite lenght and chibnal. Its not great, but it was kinda his best season.