CCR1036-12G-4S Bandwidth Test Tool Limits

Can anyone confirm that the CCR1036 only uses one CPU for the bandwidth Test Tool? I am only able to generate about 225 mbps of TCP traffic from this routerboard while I can easily generate 500+ from a CCR1009-8G-1S-1S.

Both routers are running 6.40.5.

The 1009 appears to be able to multi thread the Bandwidth Test Tool but the 1036 uses a single CPU? Is this a hardware limitation or a routerOS bug?

Nobody can confirm this?

Is it just me???