Peragus is perfectly serviceable, Citadel Station and Telos IV is torture
Seriously, Telos is mind-numbingly boring and bland. No idea why Peragus gets the brunt of the complaints from people.
I don't think those zones are actually that bad the first time you play through them. It's a few problems coming together that make them so boring and unpleasant:
1. At this point in the game you have not had any chance to develop your character. So you're not trying out different builds here.
2. Your companions are locked in. You will always have the same party throughout peragus - telos.
3. You, a magic force wizard with magic glowstick powers, are stuck with low level powers and no choice of equipment, and no magic glowstick.
3a. Then telos station has the utter gall to strip you of your equipment and make you take a pointless walk to get it back.
4. The combat is nonthreatening and slow paced. At best, you view enemies as XP bags, and more likely, as wastes of time as you watch lasers miss their targets repeatedly.
5. You have no agency whatsoever in the story throughout this segment.
6. Bao Dur is the worst and most boring companion. Then you're stuck with him on Telos.
7. Peragus is written as a murder mystery/horror setup. The mystery only sort of works the first time, and the horror doesn't work at all. Every new game must go through here, so it wears out really fast.
The game gets better after your make it through all this stuff. The first time through, it worked for me, it's building up to opening the world and turning me loose. But every time after I was just trying to get through it as quickly as possible.
During Telos you start getting to make actual decisions which is nice.