1 hour ago, Stratfordade said:

Maybe as standard, but WezFab was able to improve it with a few tweaks.

 

Errr, not really, he fooled the nagware briefly by accident but the ACTUAL latency isn't technically poor, the nagware is lying.

 

The actual latency is the same whether you're using a fake interface or the genuine one.

2 hours ago, Stratfordade said:

I can't see which parameter to alter to change data transfer rate,

These settings were somewhere in Device Manager, advanced port settings  in the com port properties tab.

 

Think I lowered both send and receive rates from 2048 to 1024.

 

latency showed up as excellent for me after this.

 

Glad it’s working well enough to do what you need tho 👌