This is genuinely awful.
I watched the first episode and some of the second and then skipped on to various episodes in the seasons. The cheesy dialogue, the incessant moody orchestral music, the horseshit 'inspirational' speeches and blathering about history, the drawn out family and romance bullshit, the horrible CGI and stupid alien tactics....
I found it NEVER gets any better. Even to the very last episode of season 5, the same boring slow shitfest is still present 'til the end.