I used to work remotely alot when i was a 3D modeller. It was really simple: i just got some concept art or a text explanaition of what was needed, and the quality of my job was measured by how close it is to the original concept. I frequently collected a bunch of these tasks and then did them all at once (which was faster, since i could decide what to reuse for several objects and generally optimize my workflow). I literally had a case when i did a month worth of work in 3 days, with the other 27 days free for my own stuff.
But things changed when i got into VFX. I rarely got any CA, and often had to iterarte many times until my work was accepted. I tried doing it like i did 3D modelling at first, but it failed: i had to do the first iteration as soon as i got the tasks, in order to get feedback and iterate further as fast as possible. Also, to get feedback fast, i had to work at generally the same time when the guys in the office did, to synchronize. So, i had to work on a schedule and communicate with other members of the team often to be effective, and at this point, working remotely only makes it harder.
So, now i’m in the office. I don’t like it here, but my productivity did get better, since i had more of a direct contact with the team.
I believe it is possible to work remotely and be as effective as in the office, but there need to be some special processes set-up in the studio to do so. Low quality communication has to be taken into account.
If it’s not - it is likely that you’ll be less productive with VFX working remotely that in an office.