I've given up on t5 and ex primals till I move house and get a better connection, I have to be pre-emptively moving to miss titan hm mechanics or I will get hit, and if you have to do that I ex from what I've heard you're going to ko the raid. Hm even lands before he's jumped on my screen a few times so I have to pay attention to the hp bar.
If I'm struggling on the I'm not even trying twin until I have a better connection. I think it sucks that higher level fights in this game test my internet more than they test me.