I find myself waiting for long periods of time anytime I want to access the payment section of the portal. It is by far not up to par with other services and deserves a look and an upgrade.
MTAS, I completly agree that some functions of the portal are very slow. I think that updating the servers would be a big improvement, especially because PM is a self-serve, so the users should have an immediate responses.
@BAL depends where the problem is. If it's old or overloaded hardware, then yes upgrading the servers (or adding additional into a load-balanced cluster) might help. I'm guessing that PM is run out of a Telus data centre, and is probably on adequate hardware. I'm guessing the issue is software not written to be scalable or performant enough. Some database tuning might help, but likely that or hardware upgrading would only be a stop-gap.
@mjagadeesh, @kav2001c clearly the usage history could be improved (filtering, searching, exporting, etc). But I'm curious what kind of "cleaning" you are requesting? I'm not being difficult, it's a sincere question for more details. Cheers!