Having just watched the original Ipcress File, I can say that in my opinion the original is better than the recent version.
Firstly, I think the actors were better.
Secondly, I think the series went on a little too long.
I wonder whether others would agree.
I am certainly struggling with it.
As you say the acting is pretty rubbish.
Trying to much to be Michael Cain rather than Harry Palmer.
And I see diversity/political correctness will shortly be covered with the white female agent and the black CIA man.
I just hate it…given up with it
I wouldn’t go so far as to say that I hate it. I watched it and it was quite good, though not as good as the original.
The thing with a series is that it allows more time to allow the story and characters to develop further and deeper than is available for a film. Having watched both AND read the book, neither matches the book in all respects IMHO but I still think the series has some merit when compared to the film.
Finally gave up on this as I finally understood what is meant by wooden acting. This really was/is a poor remake.