I'm not having any problems on any device, but admittedly, I have a pretty high speed internet, up and down. Also, I always use Chrome on 'puter, but app for phone and ipad. Everything seems to be OK for me.
I popped in for bit to have a listen (I was the phone caller) and you are an awesome tutoring leader so encouraging and knowledgeable! I hope to be around for full time for the next RC tutoring session and would also appreciate an econ passage :)
I use the avantree cell phone clip holder. Google that and it'll pop up.
It's basically a long arm deal that holds a cell phone. I clip it onto the table and point the phone down onto the test. Then you can see the test and my hands.