mechanic wrote:
On Wed, 05 Dec 2018 16:06:00 -0500, Paul wrote:

Did you try my "giant PDF file" test case ?

A pretty extreme test case!

Scrolling a PDF, shouldn't lock up other desktop input.

The file is actually 36,300 pages. 263,964,580 bytes
is the size of the copy I have. The amount of text inside
is considerably smaller, even though the formatting
of the PDF is relatively plain.

https://download.microsoft.com/downl...er_2006_R2.pdf

1) Open the completely downloaded PDF file with Edge.

2) Do a find for a search word. The purpose of using the
search word, is so Edge helper will parse most of the file.

https://s14.postimg.cc/dei2unfcx/Edge_Opens_pdf.gif

3) Watch rpcss and LSAFreeMemory or so, railed when
Edge needs garbage collection. It seems a strange
function to be railed on. Now, you can't start Notepad
with a double-click, until this railed action finishes.

https://s14.postimg.cc/6ba7eypc1/Rpc_Ss_busy_loop.gif

Found around Feb.2018 timeframe.

Paul