This boss is very annoying / impossible to do on classes that doesn't have a low cooldown float skill.

The wipe mechanic of this boss is very badly designed and it makes a huge FPS decrease and stutters.

Solutions :

-Make the boss vulnerable to all CC types ( and not just float ) after he does his shoulder attack

-Remove the wipe mechanic , it has performance issue for computers. The DP buff is already a punishment for failing the mechanic , like the Duran boss.

I fought Gotha for 2 hours before beating him, and haven't done Pit since.  

2 or one simple changes:

Only ONE CC keep float to minimize lines of code

Wipe mechanic has no DP buff, probably too 1 line of code, so that overgeared ppl can just rush this timewaster boss

Him and Duran are the worst boss designs. One of goths design issues is that the time you have to move behind him to float cc and then dodge his roar it's s so extremely fast that more often than not you will get hit by roar. There needs to be delay between those two animations. In addition some times he gets bugged and no longer glows when he does his head but. So annoying.

FYI, Knockback also works.

I do agree this boss is a pain in the ass, but it's quite satisfying when you execute the moves successfully. I've spent the most time in Pit (everyday, even before the patch) on Duran and Gotha because of failing, dropping quest and retrying. 

I think one less successful Float/KB, 3 instead of 4 out of 5 would be better.

On Succ Musa, it was pretty easy, three skills to rotate, but recently I decided to on Awaken Corsair and it took some creativity.

Before I learned KB could work, (S+LMB is the only awakening Float), was to CC at one end of the arena, was to wait out the 5 second cooldown by swinging to other end. I could walk around him and hit him with the float each time. Plenty of times I missed, but I got better at it. Now I just rotate S+LMB and Crows Mark

Ya, they need to make the requirement 2 floats at most out of all his dashes. On some classes its very easy to deal with and others its a nightmare. If you miss the requirement you instantly lose as well unless he is very low hp. Silly boss.

Duran is fine though, you have plenty of time to perform the CC and only require one of each type which your class will have. Not only that he is very squishy.

him and duran are the reasons pit of undying instant wipe mechanic are not fun