# Pixraxer as a RACER

**URL:** <https://discuss.px4.io/t/pixraxer-as-a-racer/183>\
**Category:** PX4 Autopilot\
**Created:** [February 14, 2016, 11:50am UTC](https://discuss.px4.io/t/pixraxer-as-a-racer/183 "2016-02-14T11:50:23Z")\
**Posts on this page:** 1\
**Showing post:** 44

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**Author:** ![LorenzMeier](https://discuss.px4.io/user_avatar/discuss.px4.io/lorenzmeier/32/17_2.png) [@LorenzMeier](https://discuss.px4.io/u/LorenzMeier)\
**Post date:** [April 10, 2016, 6:44pm UTC](https://discuss.px4.io/t/pixraxer-as-a-racer/183/44 "2016-04-10T18:44:23Z")

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That’s really odd - we believe its a Wifi issue with the ESP8266 since we see packet loss there, but not via USB. Could you try setting your gains with USB and a computer?

In general we noticed that dropping the ROLL\_P gain and increasing the ROLLRATE\_P gain is better for racing - could you help us testing that?

One experiment to try is to drop ROLL\_P to 3 and increase ROLLRATE\_P to 0.25 (same for pitch). You still need to tune, that’s just a starting point. I would be interested to know if you get that to a satisfactory result, because then rate mode should be a lot more stable.

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