To be honest not many here care or understand your frametimes. We are using FPS, so next time try to explain why frame rate per second halves, so pleb can understand. If you think that going down to 170 from 410 is acceptable, then I don't know what to tell you. You need high, stable frames above refresh rate to experience butter smooth gameplay and have smooth aim ability.
There's an option in the options menu that you can turn on to show frametime! Then if you're reporting an issue, you can include that info too :-)
Knowledge is power!