Some Sauce Labs account provide parallelism, aka concurrency. Sometimes customers report that they are not seeing the level of parallelism that they should be getting. For example, let's say that your account should allow you to run 10 jobs in parallel, but you only see 3 jobs running (even though you believe you have launched 10). This could be a Sauce Labs problem or it could be a problem with your test runner / CI system. Here's how to tell where the problem lies.
The key is whether or not Sauce Labs has queued up the other jobs or not. If the other jobs are queued up, then there is a problem on the Sauce Labs side, and you should open a support ticket. If you don't see the other jobs queued up, then the problem is likely in whatever system is launching the tests on your end. If you are supposed to be able to run 10 jobs concurrently, but are only seeing 3 running, see if the other 7 are in the Queued state. If they are, then it's likely our problem. If the other 7 are not Queued, then it's highly unlikely that the problem lies with Sauce. For some reason, those other 7 jobs were not launched on your end.