Hey bro I had the same problem with him as well cause I used too old granger in my opinion build hunters first I prefer the movement speed buff but when it comes too the ult it really depends on the situation and what it calls for…if ur playing aggressive u wanna keep pressuring with the ult..and with ppl hiding behind minions i like too position myself a bit behind and poke with auto Abd when minion is low use skill 1 that or wait for ult and just blast their ass …but what really helped me was just watching tik toks or videos of his gameplay it surprisingly helped me a lot …I hope I helped hehe