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While printing periodic pauses occur and the result is a blob or string in the print. Watching the Matter Control terminal I noticed multiple waits when the pause occurs. I found similar issues but none of the suggested worked. Any help is appreciated. Console output example:

->N9465 G1 X-6.28 Y8.4 E921.159*70 [1201.402]
<-ok [1201.447]
->N9466 M105*26 [1201.567]
<-wait [1202.446]
<-wait [1203.446]
<-wait [1204.445]
<-wait [1205.449]
<-wait [1206.448]
<-wait [1207.452]
<-wait [1208.451]
<-wait [1209.451]
<-wait [1210.454]
<-wait [1211.454]
->N9466 M105*26 [1211.567]
<-ok [1211.667]
->N9467 M105*27 [1211.667]
<-T:220.23 /220 B:55.00 /55 B@:85 @:48 [1211.671]
<-ok [1211.671]
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iMac High Sierra
4 GHz Intel Core i7
32 GB 1867 MHz DDR3

MatterControl v 1.7.1

Rostock Max v3 0.92.2

What happens when you print from the SD card? Are the pauses during the print still present?

g.

I was able to test that late last night and think I have it figured out. I had recently purchased an Anker USB 3.0 hub to replace my D-Link USB 2.0 hub. I put the D-Link back and it appears that my issues have gone away. I was attempting to just print the calibration block and finally completed a clean print with the D-Link hub back in. I am going to attempt a longed print later today.