Strangely taking 20 seconds to finish

[mauriciolima88]

Strangely is taking around 20 seconds to finish a simple small PDF with 7,5Kb size, but sometimes it tooks 1 second, what it might be?

`D/ViewRootImpl@79dead3[MeterActivity]: ViewPostIme pointer 0
D/ViewRootImpl@79dead3[MeterActivity]: ViewPostIme pointer 1
I/System.out: a
D/skia: Encode PNG Singlethread processname=com.uberdomarlon.rebu : 176023 us, width=750, height=1057
D/ScrollView: initGoToTop
D/ScrollView: initGoToTop
D/InputTransport: Input channel constructed: fd=133
D/ViewRootImpl@4d2bf8d[Gerando recibo]: setView = DecorView@826b542[Gerando recibo] TM=true MM=false
D/ViewRootImpl@4d2bf8d[Gerando recibo]: dispatchAttachedToWindow
V/Surface: sf_framedrop debug : 0x4f4c, game : false, logging : 0
D/ViewRootImpl@4d2bf8d[Gerando recibo]: Relayout returned: old=[0,0][0,0] new=[28,780][1052,1202] result=0x7 surface={valid=true 535776014336} changed=true
D/OpenGLRenderer: eglCreateWindowSurface = 0x7cd1dbe980
D/ViewRootImpl@4d2bf8d[Gerando recibo]: MSG_WINDOW_FOCUS_CHANGED 1
D/ViewRootImpl@4d2bf8d[Gerando recibo]: MSG_RESIZED_REPORT: frame=Rect(28, 780 - 1052, 1202) ci=Rect(0, 0 - 0, 0) vi=Rect(0, 0 - 0, 0) or=1
D/ViewRootImpl@79dead3[MeterActivity]: MSG_WINDOW_FOCUS_CHANGED 0

and After 20 seconds...

I/zygote64: ThreadFlipBegin blocked for 45.662ms
I/PDF_MY_XML: add page
I/PDF_MY_XML: pdf 1
pdf 2
D/OpenGLRenderer: eglDestroySurface = 0x7cd1dbe980
D/ViewRootImpl@4d2bf8d[Gerando recibo]: dispatchDetachedFromWindow
D/InputEventReceiver: channel '4c94576 Gerando recibo (client)' ~ Disposing input event receiver.
channel '4c94576 Gerando recibo (client)' ~NativeInputEventReceiver.
D/InputTransport: Input channel destroyed: fd=133
I/PDF_MY_XML: Complete
I/PDF_MY_XML: pdf 3
D/ViewRootImpl@79dead3[MeterActivity]: MSG_WINDOW_FOCUS_CHANGED 1
E/ViewRootImpl: sendUserActionEvent() returned.
I/zygote64: Background concurrent copying GC freed 10538(585KB) AllocSpace objects, 2(4MB) LOS objects, 49% free, 19MB/39MB, paused 539us total 161.984ms`