[SailingSperm]

Had something maybe similar too - some times instant connecting, sometimes slow, sometimes 0%. Fixed and happily using ZT every day now. (TY ZT!)

On both computers do: Network connections->Right click ZT network->Properties->Select (TCP/IPv4), probs 5th down. ->Properties->Advanced->Untick automatic metric-> set interface metric value to 1. Potentially reboot, though I've not needed to before.

Just for some visuals if needed https://support.parsec.app/hc/en-us/articles/115002766652-Us...