Is there a way to avoid the problem of two Flash player plugins running at the same time?

[Pallid Planetoid]

I find that Pale Moon (v28) will sometimes come to almost a stand-still -- and have been able to ultimately duplicate the problem as of today as described below:

When this behavior occurs I find this occurring:

Click to enlarge

... two Flash Player plugins running simultaneously....

I can resolve the issue by closing multiple Yahoo news website tabs (specifically in this case today https://finance.yahoo.com/) down to just one -- I can duplicate the problem by having more than one Yahoo website tabs open. There of course may be other websites that produce this issue as well (I cannot say one-way-or-the-other -- but I have found a direct correlation as a result of multiple Yahoo websites in use)....

I have reported this same issue in the past in this topic: Browser lock-up due to duplicate Flash Players running and updated my Flash Player plugin at that time. I am running that same current version as of this time. In this previous topic Pale Moon became totally unresponsive and found by stopping one of the "Flash Player plugins" Pale Moon was freed-up as a result (so it appears the duplicate plugins is the cause of the problem -- the "why" is the question....)

Clearly this problem has been on-going prior to v28 as the above issue was also obviously occurring in PMv27.x based on the date of the previous topic on this subject..... (I can't be sure how consistent this issue happens to be -- but today I was able to reliably duplicate the issue consistently using Yahoo the website for today.).

Is there any way to avoid this issue of having two simultaneous running Flash Player plugins?

Thanks in advance for any help....

[therube]

What on that page is using Flash?

Are you sure it is two separate instances of Flash & not "1" Flash with a "stub" portion & "1" Flash with the rest?

While Flash is running (in your shot), it's not using much in the way of CPU.
Now Pale Moon itself is.
And if 25% is 100% of 1 of 4 cores, then potentially you could be feeling that.

Do you have Flash Protected Mode enabled? Disabled?
(Enabled is safer.)
Switch modes & see if that changes anything for the better or worse?


Oh, only guessing, the stub is the IPC between the browser & the plugin itself?

[Pallid Planetoid]

Do you have Flash Protected Mode enabled? Disabled?
(Enabled is safer.)
Switch modes & see if that changes anything for the better or worse?

if you are talking about "dom.ipc.plugins.flash.disable-protected-mode" --- I have it "enabled" since this pref is set to the default "false" value.

I notice I have plugin.state.flash pref set to the non-default value "2" (whatever this pref does?), which I have no knowledge of ever changing....

I tested this 7 times and each time I find all I need to do is load the https://finance.yahoo.com/ URL ONE TIME and I will get this:

each and every time -- and when I close that one tab then the "plugin-container.exe" with the two "flash plugin.exe's" as illustrated disappear each and every time.

So there is diffinitely a one-to-one correlation between this "plugin-container.exe" getting displayed with two "flash plugin's" also running whenever just ONE tab for this URL is used.

If you use the same URL: https://finance.yahoo.com/ -- you do not get the same results?

[Pallid Planetoid]

I have discovered the problem -- If I log-off of Yahoo then this behavior does not occur. If I log-in and my portfolio "watch-list" is not displayed I still do not have the problem. But as soon as I'm logged-in and my "watch-list" does get displayed then this behavior occurs.... so it's something about the Yahoo URL I've posted in tandem with a user who is using a "watch-list" (which can only be displayed if logged-in) that this issue involving two "Flash player plugins" running simultaneously occurs. And I've found that this can be an issue if the browser has a number of tabs (other than Yahoo) open that at some point the browser can get bogged down presumably because of these two "flash player plugins" running in tandem.

That said, I'm not experiencing any lag with Pale Moon right now -- but I've only got 4 tabs open and only used the browser for a short time -- I'm assuming that the increasingly boggy behavior will occur at some point if I continue to leave the Yahoo tab open.

I'm not sure if I should mark this topic as "solved" on the basis that the Yahoo finance page under these same circumstances as explained has a problem that causes this behavior in Pale Moon or is this something that simply should not occur with Pale Moon regardless?

Addendum: Note: if I remember to not leave the Yahoo page (logged in) for too long a time I'm presuming I can avoid Pale Moon getting increasingly bogged down.