getting booted off

I use zoom through out the week with smaller meetings with no issues 

our congregation uses Zoom to host our worship services, before during and after services I have no connection issues 

but if I take the lead in a discussion , as soon as I start to deliver my talk Zoom will start to glitch and eventually logs me out 

a fairly new computer I have over 16gb free of ram and connected directly to an ethernet connection running 950DL/900UL  

I've reinstalled zoom, made sure other devices were off .... scratching my head,  as it only happens when I need it to work