Straighterline & ProctorU. Is Examity an option?

[alzee]

ProctorU itself isn't the problem and never has been -- the software they run is just bog standard helpdesk software (+Rescue from LogMeIn). It does require reasonable bandwidth and CPU resources to stream the desktop, but it'll run fine or not on any given machine regardless of the testing source; Meaning if it works for you when you schedule a proctored exam for Saylor, it'll also work for a TECEP, and also work for StraighterLine.

StraighterLine's site itself has been troublesome lately though for myself and others.

I locked down (blocked) all the external scripts they were trying to load via the FF plugin, and then unblocked them one by one until I was able to log in. After that I started abusing their "retake the first exam as many times as you want" policy for one of my courses to continue testing until I had the bare minimum allowed to successfully take an exam. Since then, I just stick to that setup for my SL courses and continue to use Chrome for everything else.