I play alone. Every now and then I'll play a game while talking to one of my friends but I don't think I'd stream while being in a group setting. Like you said, it's a lot of pressure to talk to your viewers and the people in the group. Being a viewer myself I know that if the streamer is in a group it can sometimes make viewers not want to interact with the streamer. It's fine if they're a lurker but if they're looking to socialize with the streamer this is bad because the viewer might struggle to hear the streamer at times (because everyone's talking at once) and then just become bored because they wanted someone to talk to more than a stream to watch. I believe playing in group settings is more for people who are big enough that their chat is so busy they can't keep up anyway. That's just my personal opinion. You may or may not agree with it. But I feel that they can get away with ignoring their viewers because their viewers don't expect them to respond. Most of the time what's said in chat is just emojis. At the end of the day, I think you should try playing alone and then in the group setting. See what you enjoy most and stick to it. It's your channel. You can run the stream how you see fit.