Used zoom for a paid conference tonight. Audio was glitchy right from the start, got worse as time went on. Page froze, lagged, went black and silent several times. Restarted laptop, signed into zoom, attempted to re-join conference, and watched the two words "Joining Meeting," for the next half hour as the page buffered. Page refresh did nothing, and there's no help/support available while the page buffers. Restarting the pc did nothing to help. Absolutely useless and costly meeting.