I am using an OTG to connect to my S8 but the connection at the remote end intermittently loses connection. Is there a particular brand that works better?

What remote ?

Sorry have you just posted your thread on the Osmo pocket forum, instead of spark forum

Hi, Thank you for reaching out and we do apologize for the inconvenience. May I ask what is the brand of OTG you are using to connect your devices? Also, we highly recommend using a compatible OTG for us to avoid any errors or problems. You may refer to the link below for the OTG that compatible with DJI Spark. Hope this will clarify your query for us. Cheers!

https://store.dji.com/product/dji-goggles-micro-usb-otg-cable

If you can't even manage to select the correct forum then I'm not surprised OTG defeats you.