I'm also playing through ME1 remastered edition...and it's a bit slow once you get to the Citadel.
I know there is a ton of lore and conversations and I was enthralled when I first played it.....but if you know most of this stuff then it can be quite long and laborious. Thank god for fast loading times!
It's also funny how quick your character and everybody was like "yes, the reapers, they will kill everything"....yet the evidence you get doesn't really outline the seriousness of them.