Sims and Raidbot Question

I just finished my 4 piece tier set today, so I’m simming a few builds and one of them keeps saying this:

“This combination was run at low precision. Large margin of error - actual DPS may be lower/higher.”

Is there a way I can sim a build so it avoids this and gives me some better idea of how much DPS it is? The two builds I’m looking at, one is 54,000 ahead of my current talents and the one giving me this error is 16,000* ahead. I just want to know how close they actually are.