He run well at small meets at altitude and bombs at diamond leagues. The only decent race I can recall watching from him was his semi at worlds
Makwala has tremendous trouble pacing himself. He did speed based training under Glenn Mills in Jamaica so he likes to go out very hard. He has recently been doing longer intervals from December to March. I remember looking at his Facebook and a couple weeks before world champs he ran 2 x 350m in 38 flat and 38.7 which both suggest a sub 44 or 44 low performance.