StreamMaster is built on top of Chrome...which is infamous for being a memory hog. You only want to have the camming site(s) you use open and nothing else. What other apps are you running? How much memory does your computer have?

i use an app that automatically posts a "BRB" message if something like this were to happen, just a thought, sorry this happened to you :( i always recommend checking for updates on the browser or OBS

I had the same issue and ended up just streaming through the site. I didn’t have all the templates that OBS provides but the Lovense menu still worked, just had to remind viewers it was active.