Changing LEDS freezes I2C connection

[zzxjl1]

I‘m currently using esp8266 as a master and arduino nano is a slave, i seems to be fine when i leave it idle, but when there is some light effects going on on my arduino nano the connection freezes and never recover.
NOTE: It won’t have the same issue on my esp8266，is this a performance problem？

[focalintent]

I2c makes heavy use of interrupts on the nano - which doesn’t mesh well with ws2812 style led timings - https://github.com/FastLED/FastLED/wiki/Interrupt-problems

[zzxjl1]

Thanks for your help, but when the light effect is done is it possible to reset the connection?

[focalintent]

I don't know - I think it depends on how i2c is being used and whether or not you can set things up to flush/ignore a bunch of data from i2c.