mbp15 sometimes slow gpu after awake from sleep

Consider downloading and running this little "discovery" utility, Etrecheck. It changes NOTHING. Etrecheck was developed by a senior contributor here, and uses mostly system calls and simple tests to collect often-needed information.

it contains little tests for speeds of devices, CPU utilization, memory usage, energy usage and a digest of recent problems, in one easy to use package. it does not even need to be Installed. Because less can be learned when your Mac is running great, best time to run is when your problems are actually occurring, if possible.

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The amount of data you get can be daunting. If you POST your report, some Readers here are willing to look over those reports, and can provide valuable insights.

the start a reply on the forums, click the 'additional text' icon, and PASTE

bledor wrote:

Hi guys I have problem with A1398 Mid 2015 Iris GPU , sometimes after awake from sleep , GPU is very slow

GUI is unusable , helping only restart Mac and all back to normal , this problem is about 2-3 times per week , tested Catalina big sur monterey , no different , still problem exist , whats could be wrong witch my Mac ? this is no thermal issue

Sounds like GPU is starting to fail...

Not sure what exact Mac is this however, to say more...

model identifier is much more specific to your machine...

>(Option key) System Information>Hardware