Issue with PPPoE on x86 box

we have x86 box with core i3/8Gb RAM and router OS 6.32.4. we have a separate radius machine. while more than 2000 concurrent usrs are connected on MT-NAS, users don’t get the allocated speed , even if B/W is available. CPU utilization is about 40-45%. Any suggestion ???

Are you using fasttrack? Queue-tree?

we are using sinple queue only

Try 6.34.4.

It is the same version.

You mentioned being using 6.32.4, what do you mean, it happens the same with 6.34.4?

Can you paste an export?

Have you tested BW from the x86 itself to the Internet?

sorry , earlier it was a mistake it is 6.34.4. Bandwidth to internet is perfectly OK, but it was giving problem with PPPoE users only. Even queue was created properly, but users were not getting throughput.

If you disable simple-queues, do pppoe connections get more bandwidth? If you set a queue tree with queue type pcq-download, do they get more bandwidth?