HealthyPearls, you need to have a talk with your IT Person. He or she clearly did not implement the system properly. Getting booted off, random disconnects, etc. are all indications that your network is not set up correctly rather than a problem with AC. Especially considering more than 5000 practices have it running.

A few pointers:
1) Wireless does work and can work. But it's not recommended. Even says so in bold letters on the AC website. You can't really blame them when whoever set up the network decided to ignore the recommendation.
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Wired or Wireless?

While many of our clients use a wireless network without any issues, wireless connections may cause slowness and connectivity issues even when configured correctly.

If configured incorrectly, PHI may be exposed, which means you are breaching HIPAA and have a lot of explaining to do.

Amazing Charts thus strongly recommends that all computers are hardwired to the Main ("Server") and that medical practices avoid running their EHR over a wireless networks.
Hardware Requirements


2) Laptops have ethernet ports too, you don't really need to throw all of the old ones away. Just plug them in. If the issues disappear, it should be pretty clear that wireless is the problem.

3) If you want to use wireless, get better access points preferably with Wireless N. Maybe a dual band access point so it won't interfere with any other nearby networks. Maybe get multiple ones. 1000FT of CAT6 Ethernet Cable is only $100 so choose wisely.

4) If you really want to use wireless, consider getting a Terminal Server. That will essentially eliminate your speed issues. All operations would be conducted on the attached server. You'd just be getting screen updates on the laptop.

Determine the costs, going wired (workstations) vs going heavier wireless (dual band and more access points) vs using a Terminal Server (remote desktop in house). The third option is gaining a lot of popularity.