Yesterday I remembered that in Thor2 the total Loki time was 20 minutes and it took 3 months to TH to film that.
It's suspicious that he is not even around set and possibly indicative of:

a) Loki has as much screen time but not played by TH.
b) TH isn't in Oz because he is desperately trying to land a job in LA. Veranda woman claims that even other actors of the MCU don't have anything lined up, which is bs, Evans was just cast for the new Jekyll film. TH keeps saying he has plans (but also that he doesn't make plans) but he isn't announcing anything.
c) Option a plus b with the addition of TS not beng welcome on set, she doesn't get along with the rest of the cast and she was bored in Oz.