I find Tapo to be slightly faster, more responsive and less connection issues.

Not sure about current models but I face the network unstable issue back then due to the poor WiFi signal reception on Ezviz camera.

But, I do find Ezviz seems to be slightly better at dealing with backlight compensation / wider dynamic range. Newer Tapo like the C120/C225 finally caught up in this area.

Basically Tapo's parent company, TP-Link is a networking brand, they seem to do networking better. Ezviz's parent company, Hikvision is a camera brand, they are better at image quality.