Windows performance is low

R

RafaelL4

Bit poster
Hello guys,
I'm experiencing poor performance with Parallels running Windows 10.
In the past, about 3 months ago, I tested Parallels and it performed well with the trial version.
After purchasing the app, installing it and starting to use it, I am facing this poor performance.
Could anyone help to understand this low performance? What could change from 3 months ago?
Thanks in advance
 
RafaelL4 said:
Hello GampaA,
I followed the KB https://kb.parallels.com/en/112091 but I'm still having the poor performance issue.
Is there another performance related KB?
Thanks in advance.
Click to expand...
Hello @RafaelL4, The above-mentioned KB article is the only KB article for improving the performance of Windows virtual machine. Please refer to this KB article: https://kb.parallels.com/6571 to create a support ticket and reply here with the ticket number so that we can arrange a callback / remote session. Thanks, Parallels Team.
 
I have been using Parallels for years now. And I can definitely say the performance went down a lot in the last 3 months or so. I think something got broken recently. Hardware acceleration on MacOS guest is broken - just look at some recent posts in the MacOS guest forum. I have hardware acceleration issues on Windows too, particularly in browsers (don't play games etc). Several USB devices stopped working for me for no reason (both in Windows guest and MacOS guest, at the same time!!!), such as external webcam and Android USB-debugging. If you can, downgrade to whatever version you were running during trial.
 
I see significant perf slow down of Win 10 after upgrading Parallels to 18 ver. It's not possible to work at all. After windows startup it takes about 2 minutes for desktop icons to refresh. On VMWare Win 10 works smoothly. If the issue is not resolved I am cancelling subscription.
 
MichalR4 said:
I see significant perf slow down of Win 10 after upgrading Parallels to 18 ver. It's not possible to work at all. After windows startup it takes about 2 minutes for desktop icons to refresh. On VMWare Win 10 works smoothly. If the issue is not resolved I am cancelling subscription.
Click to expand...
I've got exactly the same issue. Win 10 VM extremely slow after updating to Parallels 18.
I've measured VM computing and display capabilities compared to my desktop DELL computer. Computing performance of the VM is about 60-80% but graphic performance is below 3%, making the VM unusable.
I know this can be solved, because in a couple of times my Win 10 VM started properly and graphic performance was OK, so there is some random issue that causes this slow behavior most of the time.
I wish there was a Parallels 18 update that solved it.
 
I also solved my problem by downgrading to Parallels 17.
However, MacOS Ventura is out now and it seems Parallels 17 is not fully compatible with it.
I will stay in MacOS Monterey by now, but I'd like to have this issue solved in Parallels 18 so I can get Ventura features as soon as possible.
 
I reinstalled Parrallels tools when the support team asked me to do so in Parallels 18.0.2.
It didn't work for me.
Are you in Parallels 18.0.3?
I haven't tried this update, still in Parallels 17 and MacOS Monterey :(
 
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