Newbee to vsee

So, I got a couple boxes from Derik and all is well except the buffering/skipping/pausing. I have starlink internet and have tried clearing cache and some other tips I’ve seen with no improvement. I’m not techy so that isn’t helpful either, just wondering if I wasted my money on these. I’m back to paying for streaming because I can’t take the buffering. Any suggestions are welcome (but I will literally need step by step if it’s not super simple). Thanks!