Problem consuming CPU resources when streaming UDP in Caspar version above 2.2

I need to produce a low volume UDP stream for use in the remote controller to display the output of the channel on the Casper server, but in Version 2 above the CPU usage is high for the stream generation and this is a problem in multichannel on the Server . This problem does not exist in version 2.1:

UDP Command is:

ADD 1 STREAM udp:// -format mpegts -codec:v libx264 -preset:v ultrafast -filter:v scale=320:240 -b:v 100K -tune:v zerolatency -crf:v 18

CPU usage in Caspar Ver 2.3:


CPU usage in Caspar Ver 2.1:


Thanks for the help.