HI all,

We have now a lot off connections in Fiber Gpon & Gpon XS.
That's mean now we have up to 8.5Gbits download profile.

we have issue that every Mikrotik Device even the more powerfull.
We cannot have more than 2Gbits on a link handled by pppoe...

here screenshot on same hardware with and without pppoe... Is it a Know Issue ?

thanks

Yes, it's known that using PPPoE seems to drop throughput more than one would expect (probably not as much as you're observing though). And yes, it is known that running bandwidth test on the device itself does stress CPU to the point it becomes the bottleneck (and taking precious CPU cycles away from PPPoE doesn't help either).