Any Crucible speedrunners here? I'd love some advice

Hello, I’ve been trying to match mad_lee’s “naked” Crucible 150-170 times on Archon and Warder, but unfortunately, I can only do 5:40 at best using my build.

I’m confident that it’s a skill issue and not a build issue, as using the same builds as mad_lee (Avenger Archon & Warder), I do only 6:00+ and die a lot lol.

Please give me some tips and pointers (feel free to bit as nitpicky as possible), especially on waves 161+. I’ve practiced 150-160 a lot and consistently get 2:40 ish, but on 161+ I’m so inconsistent and I often get more than 3:10.