That does seem to make it way better, very Interesting. Found a forum topic on it here: [SOLVED] [Zwave, Zigbee, ...] RFC2217 remote serial port HowTo? Seems to have been added since 2.4/2.5. Unclear if it’s working in 3.x, but I’ll try it out soon.
Also nice to see RFC2217 is a thing, didn’t know that.
EDIT: ah… just saw the info 2 posts above my original, I completely missed that.