Capture pattern - problem with dotted shadowing appearing on the pattern tile

[collardr]

I have noticed these dotted shapes appearing on the preview of the  capture patterning and thought that it was a screen issue and would not be seen on the actual pattern file.  However it does appear on the finished article.  I have just reinstalled the latest photoshop but doubt that's the problem. 

I'd appreciate the community's help in resolving this problem.   Pattern making in Ai is fine.  Although I usually make patterns from my raster images,l  this image is a pattern made from a vector file placed in photoshop, 

The following are my  operating system details

A Dell computer
Processor Intel(R) Core(TM) i7-10700T CPU @ 2.00GHz 1.99 GHz
Installed RAM 16.0 GB (15.7 GB usable)
Device ID 52A97E28-96F1-448B-9440-3C6F75051FAB
Product ID 00330-53334-70972-AAOEM
System type 64-bit operating system, x64-based processor
Pen and touch Pen support

Edition Windows 10 Pro
Version 21H2
Installed on ‎13/‎01/‎2021
OS build 19044.1586
Experience Windows Feature Experience Pack 120.2212.4170.0

[kevin stohlmeyer · Accepted solution]

What do you have installed for Graphics Card(s)?

[collardr · Accepted solution]

Intel(R) UHD GRaphics 630

Many thanks for your response Kevin,  

I used to have Nvidia on my other computer so perhaps that is the problem here - although if it was simply a preview of the pattern I'd assume it wouldn't affect the actual image file.  Your thoughts?

[collardr · Accepted solution]

Kevin I've now discovered the graphics card is built into this computer so not upgradeable - sadly. Present thought is to make use of a high spec gaming computer to connect to the monitor when I need to do patterning! 

Thanks again for your insight. 

[collardr]

https://helpx.adobe.com/au/photoshop/kb/photoshop-cc-gpu-card-faq.html#CardRequirements

I'm following this site's guidelined to configuring the performance settings in Photoshop.  There're a few adjustments I can make so crossing fingers this will correct the problem.