(01-Jul-2016, 10:58 PM)oyvinla Wrote: hmm, that is interesting. But i'm afraid mine is mounted the right way

Check out this post on RC Groups. Apparently you aren't the only one running into this issue. Odd that a board with a F3 processor can't handle 4k/4k. Sounds like you might have to stick with 4k/2k/16k.

(01-Jul-2016, 11:16 PM)ImpelRacing Wrote: Check out this post on RC Groups. Apparently you aren't the only one running into this issue. Odd that a board with a F3 processor can't handle 4k/4k. Sounds like you might have to stick with 4k/2k/16k.

It doesn't look like the link is working

(02-Jul-2016, 07:07 AM)oyvinla Wrote: It doesn't look like the link is working

Are you using luxfloat on your FC? That increases the CPU load! I tried running 4k/4k on my XRacer V2.1, it showed 100% cpu usage with luxfloat. As soon as I changed to Rewrite CPU usage was around 30%. Now I can run 4k/4k on MULTISHOT

But my only problem is the copter vibrates violently and flips in random direction on slight stick input. After flashing the ESCs back to BLHeli 14.6 they work fine again! The PIDs are tuned, so I don't think it will be a PID issue. Also checked for any lose motor or any lose part, could find any! What could be the problem?

There is really no reason to run multishot unless you are running 8khz.

From my experience, Oneshot125 is not capable of running 4k, as I had to lower my pid loop to 2k to not have desync issues with some old littlebee 20A. When I tried with multishot I was able to run 4k without that problem