[NeRkO20]

While not deleted the Enviroment Variable ediabas_config_dir and using Node patched api32.dll in C:\EDIABAS\BIN ISTA very slow with ENET cable.
Tried replace C:\EDIABAS\BIN to 7.6 then INPA works very slow.
Deleted Enviroment Variable ediabas_config_dir and using Ediabas 7.3 with patched api32.dll both ISTA and INPA works normal

could you try to have ISTA+ in use on E-series....and then put it in backgroud and try to use NCS or INPA without closing connection in ISTa?