Tahoe 26.2 causes Safari tabs to freeze and high CPU usage on M1 Max MacBook

Coffee76 wrote:

I have an M1 Max 32GB laptop. I installed Tahoe 26.2, but now all the tabs are not responding, if I keep opened up to 5 and when I go to view some of them again - just a white page. Mostly Facebook and Instagram do this. If I reload page, it doesn't help - still white page, I have to close the tab and open a new one, then it responds.

Also, Safari shows CPU% 60-80 in the meantime.

I have restarted it, etc. Does anyone know what to do?

Are there other particular app involved here besides your Safari...you do not specify.

If this is a browser issue, try a different browser and compare your results.

re: Safari

Open new window and try new tabs there and compare your results...(?)

For Safari— quit the app and relaunch it holding the Shift key down

I found Safari 26+ is having some issues with the tabs(web sites). On mine some do not open correctly and when I return to home page some links appear white (no icon). Need to keep refreshing the page. No issues with Safari 18.6 (Sequoia). Also tested on Firefox and no issue using the same homepage layout. I have gone back to Sequoia on all my Macs except one. I will wait until some Tahoe updates later to see if any improvement.

Another thing to try: when a tab goes bad, even after the tab is closed the errant website process may still be running at a pretty high CPU level. You can open Activity Monitor and sort by CPU to see if that is happening. You can then use the quit (or force quit) feature of Activity Monitor (in the toolbar or in the View menu) to kill the misbehaving process.

Coffee76 wrote:

I have an M1 Max 32GB laptop. I installed Tahoe 26.2, but now all the tabs are not responding, if I keep opened up to 5 and when I go to view some of them again - just a white page. Mostly Facebook and Instagram do this. If I reload page, it doesn't help - still white page, I have to close the tab and open a new one, then it responds. Also, Safari shows CPU% 60-80 in the meantime.

I have restarted it, etc. Does anyone know what to do?

[Re-Titled by Moderator]

Make sure none of the options in Settings > Network > WiFi > [Your Network Name] > Details... button > Proxies are enabled.