I’m running into the same issue with a 5581ES running 32.11 firmware.
I’ve tried connecting to the PLC with servers running the following Ignition versions:
• 7.9.9
• 7.9.12
• 8.0.9
And I get the same symptoms as OP. I am connected, can browse, but have bad quality on any tag.
I am connected over an ENBT card in slot 2 of the rack, and then to slot 0.
Gateway restarts, and enable/disable of device connections have not helped.
For comparison, I am able to connect to an L71S and a compact logix (1769-L36ERMS) safety PLCs running v32 firmware with the same servers…