SmartPSS in any version (normal, lite) is big shit show..
Dahua broken its code many years ago and they don't known how to fix this..
empty new installation without any device added and it takes 100% cpu..
In Poland, there is one very big and old OEM partner of both Dahua and HIK..
They sells a lot od Dahua/Hik and even
Uniview cams under own brand (something like Andy here on forum, but they are much much bigger).
They developed own Windows / Mac and even Linux app called BCS manager..
It works with Dahua and HIK cams using private protocols or even any other using ONVIF..
And this apps works much better that SmartPSS...
BCS Manager 1.7 najnowsza wersja oprogramowania do zarządzania rejestratorami i kamerami marki BCS, Dahua, Hikvision oraz innych firm posiadających urządzenia z ONVIF. Systemy Windows, macOS, Linux.
www.sklep-bcs.pl
Page is in polish (You can turn on automatic translation), but app is in English..
Default user/pass is admin/admin
download and try to use..
download links are on bottom of the page..
ps. BCS line is different name for Dahua cams (important when You choose protocol)...
ps2. description in english: