I don't think it's so much on upgrading their servers. They need to up the bandwidth. They think 5MBPS is plenty when they should actually be having the bandwidth set at 50MBPS or higher. That would certainly stop the lagging if they were to do this.
Most users that have internet today have high speed connections of 50 to 100 MBPS Service. If RLC only limits their bandwidth to 5MBPS, then 100 users or more would slow that page down to a snails pace. For the money RLC charges for their memberships 5MBPS in todays internet age is unacceptable.. Almost makes you feel your back in the dial up internet stage when it slows to a crawl and lags.