@epop11rt3 i think ya said ya wanted to turn on a couple more in your screenshot of (Graphics Feature Status) so here is a couple.. if ya need more post which ones..

type this in opera 's address bar

opera://flags/#ignore-gpu-blacklist

and Enable - Override software rendering list

Enable 'n this flag will change - Hardware Protected Video Decode: Unavailable

to = Hardware accelerated..

also that same flag will change - Rasterization: Unavailable

to = Hardware accelerated..

also get chrome updated And your gaphic drivers..

I am pleased to report that I am currently able to run Opera smoothly after updating the browser, and tweaking a few settings. I also have this extension called Speed Up Browsing, which seems to have made an improvement in performance. As of this current post, I currently have several tabs open in Opera (while running this other extension called Tab Suspender, which automatically suspends inactive background tabs after a set period of time) with no performance hits, even while playing YouTube videos in HD

type this in opera 's address bar

opera://flags/#ignore-gpu-blacklist

and Enable - Override software rendering list

Enable 'n this flag will change - Hardware Protected Video Decode: Unavailable

to = Hardware accelerated..

also that same flag will change - Rasterization: Unavailable

to = Hardware accelerated..

also get chrome updated And your gaphic drivers..

looks like an old chomium bug found here - https://bugs.chromium.org/p/chromium/issues/detail?id=764036

to epop11rt3 - seems like ya don't update n e thing often..

the audio thingy was not about if ya had issues but was for sumthing else n e ways it does not matter..

am glad ya posted screen shot.. because this is the main issue..

in your logs looks like the shader is hitting a bug in one your GPU drivers...

have you updated your amd graphic card.. looks like amd website https://www.amd.com/en/support has a couple updates for your Windows 10 - 64-Bit AMD video card.. one of them is - 1/21/2019 - the other is - 3/20/2019 -..

ok so 1 - the log also shows a bug that was in (Chrome from around 2017).. I know Opera Forum did a little work to their website lately and so when you uploaded your screen shot sumthing may have happened.. but

how old is that chrome version ya got.. lol

2 - back to the Chromium bug (Shader compile error).. your logs shows this bug was reported here - https://bugs.chromium.org/p/chromium/issues/detail?id=764036.. and also here https://github.com/Strilanc/Quirk/issues/378..

i dunno if this was fixed.. and this is way over my head..

so maybe leocg can shed sum light on this Chromium bug..

Help leocg.. please !..

Note - To epop11rt3 - answer and do what ever leocg says please..

1. I don't use my Windows 10 laptop for gaming purposes.
2. I have the most current version of Opera.
3. I tried disabling all extensions on my browser except for my ad-blocker, but will run further tests later, re-enabling my extensions one by one. I only had a single tab open (YouTube), and video playback seemed to be smooth, but got at least one or two hiccups.
4. I just realized that I wanted to give you the info about the Log Messages, so here is the info for you I have copied onto a Word document:

Log Messages
GpuProcessHostUIShim:
[4948:12228:0326/165102.949:WARNING:angle_platform_impl.cc(52)] : compileToBinary(232): C:\fakepath(65,8-58): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them C:\fakepath(73,9-43): warning X3571: pow(f, e) will not work for negative f, use abs(f) or conditionally handle negative values if you expect them
GpuProcessHostUIShim:

i dunno if ya checked if ya had the Win10 1803 CryptSvc problem.. it causes freeze beside other stuff..

ya should move on up to 1809 if possible

have ya updated that old version 58.0.3135.68 to the new one..

did ya ever disable all extension then try youtube..

ya never posted a snapshot from the above post.. about (Graphics Feature Status)..

ya may need to make a new profile..

before ya check and do all that

do this..

turn the service on called Superfetch or try it disabled.. try both ways on or off

go to control panel - sound - playback tab - right click speakers - click properties - Advance tab - Select the sample rate in the drop down menu and set it to..

16 bit, 44100 Hz or this one - 24 bit, 96000 Hz

Right-click on your Opera desktop icon and select Properties

Go to Shortcut tab
Now, in the Target field, add the following code at the end of the link --disk-cache-size=1073741824

that disk cache size = 1GB

Eample..
"C:\Program Files (x86)\Opera\launcher.exe" -–disk-cache-size=1073741824 (I may have this wrong) lol

ummm.. one thing i've noticed that seems to be broken in most of the window 's uodates is this.. (ya will be freeze free !)

and so ya will notice it the most.. we will do this in the regular 'ol Balanced power plan.. but i would do all power plans..

Go to start - Power Options - Balanced power plan - click Change plan settings - click Change advance power settings - now while in Advanced settings scroll down to PCI Express click to open - then click open (Link State Power Management) - then click (Plugged in) in the drop down menu box click the option Off - Also do the same for the one called - (On battery) click the option off in the drop down menu - click Apply then Ok it..

go to utube except.. Restore to the Old Version of Youtube.. then Test with only 1 tab with 24fps or 30 fps..

Now Com 'on & give us sum Feedback ? ! lol

we wanna make sure the words (Hardware accelerated) appear next to most of the items (like in the below Example)..

Note - If you see that the (Use hardware acceleration when available) option is already enabled but your GPU setting shows that acceleration is unavailable = Your Gpu may be black listed..

So all ya need to do is - in the address bar open opera://gpu

Look @ the 1st heading called - (Graphics Feature Status) - under that heading ya will see items like these..

Example

(Graphics Feature Status)

Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Force enabled
Native GpuMemoryBuffers: Hardware accelerated
Rasterization: Hardware accelerated
Surface Synchronization: Enabled
Video Decode: Hardware accelerated
WebGL: Hardware accelerated
WebGL2: Hardware accelerated

take a snapshot of (Graphics Feature Status and the items) is all ya need and post it for us to see..

then check down @ the bottom of that same page also for the heading called - (Log Messages) to see if n e errors or messages appear/show up..

Note - before take 'n the screen shot make sure that (Use Hardware Acceleration when available) is Enabled in the Opera Settings..

Note - Unfortunately, hardware acceleration can't help with buffering (this has to do with your internet connection) does the freeze happen right after try 'n to buffer..

you said this - (6.00GB Single-Channel DDR3 @ 798MHz)

this is where ya got a bit of a bottle neck perhaps..

even tho high performance did better for ya.. your video card memory is probably about - 335 Mhz base speed - 497Mhz - upto 800 Mhz..

and thats the speed No matter which power plan ya use.. not much ya can do about that..

so just remember that your graphic settings can always be set back to the AMD default easily if do decide to adjust slightly..

could ya check this to make sure this is not on..

Assuming Windows 10 1803:

Start - Settings - Gaming - Game bar

Set "Record game clips, screenshots, and broadcast using Game bar" to Off

sum of the win 10 updates and chrome updates are or were have 'n problems.. ya can look this post over - https://forums.opera.com/post/165054

ya probally don't have those problems.. thou

try setting your opera flags to default..

ya may need to slightly adjust sum of the AMD graphic setttings..
check this link out - https://www.maketecheasier.com/amd-radeon-global-graphics-settings/

also to check fps right click the youtube video your watch 'n and click (Stats for nerds)..

24 fps & 30 should run ok..

@athlonite when ya had win 8.1 did opera play youtube ok or did it have troubes like ya have with win 10..

what resolution ya use mainly.. 480p - 720p - higher
20fps - 30bfps - 60bfps - higher..

BTW - to check n e programs for 32 or 64 bit
open taskmanager - details tab - rigt click and choose columns - scroll down and check box for platform

I didn't use Opera in Windows 8.1 for very long. But it did play YouTube okay at that time. Also, I use no higher than 720p resolution, but not sure of the fps.

In Balanced power plan. It fluctuates between 1.0Ghz to 2.0 and 2.4Ghz..

But when in High Performance mode, It fluctuates between 2.0 GHz to 2.4 GHz..

is the processor like a 2.0 Ghz - 2.40 Ghz Turbo boost 4 core..

when ya look @ Power options on Windows which one does it say.. is it like - Hp recommended..
.do ya ever enable the Turbo boost so all processors will run and not be parked to see if that will help..

try High performance mode instead of Balanced

in the Amd settings uncheck Steady video may help..

what resolution ya use mainly.. 480p - 720p - higher
20fps - 30bfps - 60bfps - higher..

BTW - to check n e programs for 32 or 64 bit
open taskmanager - details tab - rigt click and choose columns - scroll down and check box for platform

what version of Opera ya got & is it 32/64 bit..

how does youtube play in other browsers..

@epop11rt3 said in Opera stuttering and occasionally freezes while playing YouTube videos:

Mullins 28nm Technology

Beema & Mullins - same die - are ya sure mullins.. the reason i asked is coz bemma i think not mullins ran applications pretty fast in practice. However, you will have to live with small delays..
for example, when you switch to the Windows 8.1 start menu.