A link to a good test program site that would have shown whether the internet service was sufficient would have been helpful. I am an “appliance user “ and I really don’t know much about networking and internet details.
I also agree with you that smartlink isn’t the only benefit of SSDR 2.0. However, the receiver improvements are being made to SSDR 1.9 — albeit at a slower pace.
Evidently you did not see these on the forum or did not recognize them as useful at the time.
I post here not to be critical of your issue but rather for reference to others whom might be thinking about upgrading to V2 and would like the same information.
I know we are talking different levels of software investment, as some of our professional software has a sort of "sniffer/ferret" app one can download and run to pre-check configuration suitability before buying or doing an upgrade.
This stuff is "office-staff simple" rather than techie focused.
There could be a potential benefit to having something simple available for SmartSDR/SmartLink.
I'll come back later with some other simple-form ideas as my supporting older hams with the present software has been a bit more challenging - largely to do with their technical level & familiarity being less than the opportunities the present software GUI gives them. Some color/contrast/visibility issues as well.
All best and 73