I'm doing the same. Just finished the celestial toymaker story. These reconstructions for missing episodes are brutal sometimes. Can't wait to get past them.
I'n not even done with the first season, just finished The Keys of Marinus. For Marco Polo I watched the 30 minutes reconstruction, thought the pacing was alright.
It wouldn't be so bad if classic who was consistently paced. The black and white episodes had some real bangers that I was engaged for the fill 22 minutes, but a lot were just slogs.
In principle I do believe a good story can carry anything - visuals are secondary in a compelling plot.