I use Exness for scalping. I use EA and scalp manualy. And afetr about a year being with them I would like to tell few things about Exness.
First of all, compare with others (I'm trading in Forex about 5 years with a lot of brokers) they have in my mind 3 big advantages: low spreads, high leverage and many instruments. So to me, I hope they like scalpers. Frankly speaking, with them I have never get problem with my trading strategy: they do not ban orders placed withing several seconds...So that it is all ok.
Second, some time ago they launched free vps and I like it too. My EA is running there and Im not afraid of internet connection, electricity problems etc things.
So that is my experience.