FreeRDP-Webconnect Freezes when opening a busy window

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If I open a busy window with lots of elements my HTML5 connect over FreeRDP-Webconnect freezes. I am running v1.2.0.442 on Windows 2016 on AWS. I am unable to reconnect. The service appears to be running but when I try and restart it I get the error 1053.

These are the logs that appear after it freezes

257 >> tcode: 17
Kup: c=17
257 >> tcode: 13
Kup: c=13
257 >> tcode: 13
Kdown: c=13
257 >> tcode: 17
Kdown: c=17
257 >> tcode: 69
Kup: c=69
257 >> tcode: 66
Kup: c=66
257 >> tcode: 69
Kdown: c=69
257 >> tcode: 66
Kdown: c=66
257 >> tcode: 85
Kup: c=85
257 >> tcode: 85
Kdown: c=85
257 >> tcode: 84
Kup: c=84
257 >> tcode: 84
Kdown: c=84
257 >> tcode: 85
Kup: c=85
257 >> tcode: 85
Kdown: c=85
257 >> tcode: 79
Kup: c=79
257 >> tcode: 79
Kdown: c=79
257 >> tcode: 89
Kup: c=89
257 >> tcode: 89
Kdown: c=89
JS: mU b:  4096  x:  537  y:  52
JS: mD b:  4096  x:  537  y:  52 
JS: mU b:  4096  x:  1073  y:  17 
JS: mD b:  4096  x:  1073  y:  17
Request FROM: 93.107.30.164 replied with 200 OK