We are aware some users have had a delay issue in the ForScore app and we're working on solving this issue in our future updates. For now, if you decide to get a Flic, you can reduce the latency by assigning the action for Click only.
We also support other musician's tools, you can check them out here: https://flic.io/applications/composition
And we made a post a couple months back about how musicians use Flic sucessfully: https://flic.io/blog/Musicians-turn-page-Flic
Hope this helps! :)
I also experience this, when can we expect this to be resolved?